36815265921 has 8 divisors (see below), whose sum is σ = 56099452864. Its totient is φ = 21037294800.

The previous prime is 36815265881. The next prime is 36815265937. The reversal of 36815265921 is 12956251863.

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

It is a de Polignac number, because none of the positive numbers 2^k-36815265921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (36815265121) 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, 876553930 + ... + 876553971.

It is an arithmetic number, because the mean of its divisors is an integer number (7012431608).

Almost surely, 2^36815265921 is an apocalyptic number.

It is an amenable number.

36815265921 is a deficient number, since it is larger than the sum of its proper divisors (19284186943).

36815265921 is a wasteful number, since it uses less digits than its factorization.

36815265921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753107911.

The product of its digits is 777600, while the sum is 48.

The spelling of 36815265921 in words is "thirty-six billion, eight hundred fifteen million, two hundred sixty-five thousand, nine hundred twenty-one".