61538622704 has 40 divisors (see below), whose sum is σ = 128479016400. Its totient is φ = 28385561088.

The previous prime is 61538622689. The next prime is 61538622707. The reversal of 61538622704 is 40722683516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61538622707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266324 + ... + 440460.

It is an arithmetic number, because the mean of its divisors is an integer number (3211975410).

Almost surely, 2^61538622704 is an apocalyptic number.

It is an amenable number.

61538622704 is an abundant number, since it is smaller than the sum of its proper divisors (66940393696).

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

61538622704 is a wasteful number, since it uses less digits than its factorization.

61538622704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175857 (or 175851 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 61538622704 in words is "sixty-one billion, five hundred thirty-eight million, six hundred twenty-two thousand, seven hundred four".