8000637515961 has 32 divisors (see below), whose sum is σ = 11325322229760. Its totient is φ = 5006555498496.

The previous prime is 8000637515957. The next prime is 8000637515993. The reversal of 8000637515961 is 1695157360008.

It is not a de Polignac number, because 8000637515961 - 2² = 8000637515957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (8000637515911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31416835 + ... + 31670471.

It is an arithmetic number, because the mean of its divisors is an integer number (353916319680).

Almost surely, 2^{8000637515961} is an apocalyptic number.

It is an amenable number.

8000637515961 is a deficient number, since it is larger than the sum of its proper divisors (3324684713799).

8000637515961 is a wasteful number, since it uses less digits than its factorization.

8000637515961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255313.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 8000637515961 in words is "eight trillion, six hundred thirty-seven million, five hundred fifteen thousand, nine hundred sixty-one".