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12757484693 = 71179682883
BaseRepresentation
bin10111110000110011…
…11100010010010101
31012221002110101000002
423320121330102111
5202111404002233
65505525101045
7631066554632
oct137031742225
935832411002
1012757484693
1154572a4088
122580557785
131284080015
1489047b189
154e9eea6e8
hex2f867c495

12757484693 has 4 divisors (see below), whose sum is σ = 12937167648. Its totient is φ = 12577801740.

The previous prime is 12757484687. The next prime is 12757484723. The reversal of 12757484693 is 39648475721.

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: 39648475721 = 95341603857.

It is a cyclic number.

It is not a de Polignac number, because 12757484693 - 212 = 12757480597 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 (12757414693) 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, 89841371 + ... + 89841512.

It is an arithmetic number, because the mean of its divisors is an integer number (3234291912).

Almost surely, 212757484693 is an apocalyptic number.

It is an amenable number.

12757484693 is a deficient number, since it is larger than the sum of its proper divisors (179682955).

12757484693 is an equidigital number, since it uses as much as digits as its factorization.

12757484693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179682954.

The product of its digits is 10160640, while the sum is 56.

The spelling of 12757484693 in words is "twelve billion, seven hundred fifty-seven million, four hundred eighty-four thousand, six hundred ninety-three".

Divisors: 1 71 179682883 12757484693