61637622673616 has 80 divisors (see below), whose sum is σ = 133460712842688. Its totient is φ = 27333011174400.

The previous prime is 61637622673559. The next prime is 61637622673633.

61637622673616 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×61637622673616² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328400150 + ... + 328587786.

Almost surely, 2^{61637622673616} is an apocalyptic number.

It is an amenable number.

61637622673616 is an abundant number, since it is smaller than the sum of its proper divisors (71823090169072).

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

61637622673616 is a wasteful number, since it uses less digits than its factorization.

61637622673616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233220 (or 233214 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 62.

The spelling of 61637622673616 in words is "sixty-one trillion, six hundred thirty-seven billion, six hundred twenty-two million, six hundred seventy-three thousand, six hundred sixteen".