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1276420163080 = 235142722361951
BaseRepresentation
bin10010100100110000100…
…100100000011000001000
311112000122220201121220211
4102210300210200120020
5131403102030204310
62414213533530504
7161134611241216
oct22446044403010
94460586647824
101276420163080
114523659a6767
12187466643a34
139349ab7c10a
1445ac9a81cb6
1523308c7bc8a
hex12930920608

1276420163080 has 32 divisors (see below), whose sum is σ = 2873958071040. Its totient is φ = 510210251200.

The previous prime is 1276420163071. The next prime is 1276420163087. The reversal of 1276420163080 is 803610246721.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1276420163087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11123896 + ... + 11238055.

It is an arithmetic number, because the mean of its divisors is an integer number (89811189720).

Almost surely, 21276420163080 is an apocalyptic number.

1276420163080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1276420163080 is an abundant number, since it is smaller than the sum of its proper divisors (1597537907960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1276420163080 is a wasteful number, since it uses less digits than its factorization.

1276420163080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22363389 (or 22363385 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 1276420163080 in words is "one trillion, two hundred seventy-six billion, four hundred twenty million, one hundred sixty-three thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 1427 2854 5708 7135 11416 14270 28540 57080 22361951 44723902 89447804 111809755 178895608 223619510 447239020 894478040 31910504077 63821008154 127642016308 159552520385 255284032616 319105040770 638210081540 1276420163080