61634533730623 has 16 divisors (see below), whose sum is σ = 72157814729280. Its totient is φ = 51540850771200.

The previous prime is 61634533730617. The next prime is 61634533730633. The reversal of 61634533730623 is 32603733543616.

It is a de Polignac number, because none of the positive numbers 2^k-61634533730623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61634533730633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126111013 + ... + 126598801.

It is an arithmetic number, because the mean of its divisors is an integer number (4509863420580).

Almost surely, 2^{61634533730623} is an apocalyptic number.

61634533730623 is a deficient number, since it is larger than the sum of its proper divisors (10523280998657).

61634533730623 is a wasteful number, since it uses less digits than its factorization.

61634533730623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928098.

The product of its (nonzero) digits is 14696640, while the sum is 52.

The spelling of 61634533730623 in words is "sixty-one trillion, six hundred thirty-four billion, five hundred thirty-three million, seven hundred thirty thousand, six hundred twenty-three".