12956699477 has 8 divisors (see below), whose sum is σ = 13108677120. Its totient is φ = 12804864160.

The previous prime is 12956699467. The next prime is 12956699491. The reversal of 12956699477 is 77499665921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12956699477 - 2¹⁶ = 12956633941 is a prime.

It is a super-2 number, since 2×12956699477² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12956699467) 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, 153398 + ... + 222360.

It is an arithmetic number, because the mean of its divisors is an integer number (1638584640).

Almost surely, 2^12956699477 is an apocalyptic number.

It is an amenable number.

12956699477 is a deficient number, since it is larger than the sum of its proper divisors (151977643).

12956699477 is an equidigital number, since it uses as much as digits as its factorization.

12956699477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71163.

The product of its digits is 51438240, while the sum is 65.

The spelling of 12956699477 in words is "twelve billion, nine hundred fifty-six million, six hundred ninety-nine thousand, four hundred seventy-seven".