61507170552 has 32 divisors (see below), whose sum is σ = 162813099600. Its totient is φ = 19296367104.

The previous prime is 61507170551. The next prime is 61507170563. The reversal of 61507170552 is 25507170516.

61507170552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61507170552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61507170551) 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, 75376027 + ... + 75376842.

Almost surely, 2^61507170552 is an apocalyptic number.

It is an amenable number.

61507170552 is an abundant number, since it is smaller than the sum of its proper divisors (101305929048).

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

61507170552 is a wasteful number, since it uses less digits than its factorization.

61507170552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150752895 (or 150752891 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 61507170552 in words is "sixty-one billion, five hundred seven million, one hundred seventy thousand, five hundred fifty-two".