61534636713 has 20 divisors (see below), whose sum is σ = 100278668688. Its totient is φ = 37293718680.

The previous prime is 61534636697. The next prime is 61534636727. The reversal of 61534636713 is 31763643516.

61534636713 is a `hidden beast` number, since 6 + 1 + 5 + 3 + 4 + 636 + 7 + 1 + 3 = 666.

It is not a de Polignac number, because 61534636713 - 2⁴ = 61534636697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61534638713) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34530331 + ... + 34532112.

Almost surely, 2^61534636713 is an apocalyptic number.

It is an amenable number.

61534636713 is a deficient number, since it is larger than the sum of its proper divisors (38744031975).

61534636713 is a wasteful number, since it uses less digits than its factorization.

61534636713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69062466 (or 69062457 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The spelling of 61534636713 in words is "sixty-one billion, five hundred thirty-four million, six hundred thirty-six thousand, seven hundred thirteen".