7816012136 has 16 divisors (see below), whose sum is σ = 14691943140. Its totient is φ = 3898160640.

The previous prime is 7816012133. The next prime is 7816012147. The reversal of 7816012136 is 6312106187.

It can be written as a sum of positive squares in 2 ways, for example, as 7797949636 + 18062500 = 88306^2 + 4250^2 .

It is a super-2 number, since 2×7816012136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7816012096 and 7816012105.

It is not an unprimeable number, because it can be changed into a prime (7816012133) 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, 1227305 + ... + 1233656.

Almost surely, 2^7816012136 is an apocalyptic number.

It is an amenable number.

7816012136 is a deficient number, since it is larger than the sum of its proper divisors (6875931004).

7816012136 is a wasteful number, since it uses less digits than its factorization.

7816012136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461364 (or 2461360 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 7816012136 is about 88408.2130573851. The cubic root of 7816012136 is about 1984.5486127279.

The spelling of 7816012136 in words is "seven billion, eight hundred sixteen million, twelve thousand, one hundred thirty-six".