8136533720 has 64 divisors (see below), whose sum is σ = 20931289920. Its totient is φ = 2788498944.

The previous prime is 8136533701. The next prime is 8136533737. The reversal of 8136533720 is 273356318.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906374 + ... + 915306.

It is an arithmetic number, because the mean of its divisors is an integer number (327051405).

Almost surely, 2^8136533720 is an apocalyptic number.

It is an amenable number.

8136533720 is an abundant number, since it is smaller than the sum of its proper divisors (12794756200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8136533720 is a wasteful number, since it uses less digits than its factorization.

8136533720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12204 (or 12200 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 8136533720 is about 90202.7367655771. The cubic root of 8136533720 is about 2011.3136895356.

The spelling of 8136533720 in words is "eight billion, one hundred thirty-six million, five hundred thirty-three thousand, seven hundred twenty".