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12572810077 = 61512044027
BaseRepresentation
bin10111011010110010…
…11101101101011101
31012110012221221001111
423231121131231131
5201222114410302
65435330542021
7623365056652
oct135531355535
935405857044
1012572810077
115372029333
12252a737911
131254a304b9
14873b27c29
154d8bbc0d7
hex2ed65db5d

12572810077 has 4 divisors (see below), whose sum is σ = 12574860256. Its totient is φ = 12570759900.

The previous prime is 12572810057. The next prime is 12572810083. The reversal of 12572810077 is 77001827521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77001827521 = 201073829603.

It is a cyclic number.

It is not a de Polignac number, because 12572810077 - 215 = 12572777309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12572810057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015863 + ... + 1028164.

It is an arithmetic number, because the mean of its divisors is an integer number (3143715064).

Almost surely, 212572810077 is an apocalyptic number.

It is an amenable number.

12572810077 is a deficient number, since it is larger than the sum of its proper divisors (2050179).

12572810077 is an equidigital number, since it uses as much as digits as its factorization.

12572810077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050178.

The product of its (nonzero) digits is 54880, while the sum is 40.

It can be divided in two parts, 12572 and 810077, that added together give a square (822649 = 9072).

The spelling of 12572810077 in words is "twelve billion, five hundred seventy-two million, eight hundred ten thousand, seventy-seven".

Divisors: 1 6151 2044027 12572810077