61507574116437 has 16 divisors (see below), whose sum is σ = 82763241929280. Its totient is φ = 40628484738432.

The previous prime is 61507574116423. The next prime is 61507574116463. The reversal of 61507574116437 is 73461147570516.

It is a happy number.

It is not a de Polignac number, because 61507574116437 - 2²⁰ = 61507573067861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61507574116477) 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, 37573018 + ... + 39175844.

It is an arithmetic number, because the mean of its divisors is an integer number (5172702620580).

Almost surely, 2^{61507574116437} is an apocalyptic number.

It is an amenable number.

61507574116437 is a deficient number, since it is larger than the sum of its proper divisors (21255667812843).

61507574116437 is a wasteful number, since it uses less digits than its factorization.

61507574116437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720292.

The product of its (nonzero) digits is 14817600, while the sum is 57.

The spelling of 61507574116437 in words is "sixty-one trillion, five hundred seven billion, five hundred seventy-four million, one hundred sixteen thousand, four hundred thirty-seven".