8156785632 has 24 divisors (see below), whose sum is σ = 21411562536. Its totient is φ = 2718928512.

The previous prime is 8156785621. The next prime is 8156785639. The reversal of 8156785632 is 2365876518.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8156785639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42483163 + ... + 42483354.

It is an arithmetic number, because the mean of its divisors is an integer number (892148439).

Almost surely, 2^8156785632 is an apocalyptic number.

It is an amenable number.

8156785632 is an abundant number, since it is smaller than the sum of its proper divisors (13254776904).

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

8156785632 is a wasteful number, since it uses less digits than its factorization.

8156785632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84966530 (or 84966522 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The square root of 8156785632 is about 90314.9247466885. The cubic root of 8156785632 is about 2012.9810334356.

The spelling of 8156785632 in words is "eight billion, one hundred fifty-six million, seven hundred eighty-five thousand, six hundred thirty-two".