61605223131054 has 64 divisors (see below), whose sum is σ = 125370408176640. Its totient is φ = 20177693153280.

The previous prime is 61605223131047. The next prime is 61605223131077. The reversal of 61605223131054 is 45013132250616.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173801334 + ... + 174155430.

It is an arithmetic number, because the mean of its divisors is an integer number (1958912627760).

Almost surely, 2^{61605223131054} is an apocalyptic number.

61605223131054 is an abundant number, since it is smaller than the sum of its proper divisors (63765185045586).

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

61605223131054 is a wasteful number, since it uses less digits than its factorization.

61605223131054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355945.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 61605223131054 in words is "sixty-one trillion, six hundred five billion, two hundred twenty-three million, one hundred thirty-one thousand, fifty-four".