61542220012254 has 48 divisors (see below), whose sum is σ = 133389233100864. Its totient is φ = 20506727577600.

The previous prime is 61542220012223. The next prime is 61542220012309. The reversal of 61542220012254 is 45221002224516.

61542220012254 is a `hidden beast` number, since 6 + 1 + 5 + 422 + 2 + 0 + 0 + 1 + 225 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 594725739 + ... + 594829209.

It is an arithmetic number, because the mean of its divisors is an integer number (2778942356268).

Almost surely, 2^{61542220012254} is an apocalyptic number.

61542220012254 is an abundant number, since it is smaller than the sum of its proper divisors (71847013088610).

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

61542220012254 is a wasteful number, since it uses less digits than its factorization.

61542220012254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114993 (or 114990 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 61542220012254 in words is "sixty-one trillion, five hundred forty-two billion, two hundred twenty million, twelve thousand, two hundred fifty-four".