8135681652 has 36 divisors (see below), whose sum is σ = 23503081056. Its totient is φ = 2324480400.

The previous prime is 8135681639. The next prime is 8135681681. The reversal of 8135681652 is 2561865318.

8135681652 is a `hidden beast` number, since 81 + 3 + 568 + 1 + 6 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 8135681598 and 8135681607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16141974 + ... + 16142477.

Almost surely, 2^8135681652 is an apocalyptic number.

It is an amenable number.

8135681652 is an abundant number, since it is smaller than the sum of its proper divisors (15367399404).

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

8135681652 is a wasteful number, since it uses less digits than its factorization.

8135681652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32284468 (or 32284463 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 8135681652 is about 90198.0135701447. The cubic root of 8135681652 is about 2011.2434779886.

The spelling of 8135681652 in words is "eight billion, one hundred thirty-five million, six hundred eighty-one thousand, six hundred fifty-two".