11655970957 has 8 divisors (see below), whose sum is σ = 12138831000. Its totient is φ = 11178506304.

The previous prime is 11655970919. The next prime is 11655970961. The reversal of 11655970957 is 75907955611.

It can be written as a sum of positive squares in 4 ways, for example, as 662238756 + 10993732201 = 25734^2 + 104851^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11655970957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11655970898 and 11655970907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655973957) 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, 1344438 + ... + 1353079.

It is an arithmetic number, because the mean of its divisors is an integer number (1517353875).

Almost surely, 2^11655970957 is an apocalyptic number.

It is an amenable number.

11655970957 is a deficient number, since it is larger than the sum of its proper divisors (482860043).

11655970957 is a wasteful number, since it uses less digits than its factorization.

11655970957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697695.

The product of its (nonzero) digits is 2976750, while the sum is 55.

The spelling of 11655970957 in words is "eleven billion, six hundred fifty-five million, nine hundred seventy thousand, nine hundred fifty-seven".