61561510602 has 16 divisors (see below), whose sum is σ = 123144242592. Its totient is φ = 20516966640.

The previous prime is 61561510597. The next prime is 61561510613. The reversal of 61561510602 is 20601516516.

61561510602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846388 + ... + 916239.

It is an arithmetic number, because the mean of its divisors is an integer number (7696515162).

Almost surely, 2^61561510602 is an apocalyptic number.

61561510602 is an abundant number, since it is smaller than the sum of its proper divisors (61582731990).

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

61561510602 is a wasteful number, since it uses less digits than its factorization.

61561510602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768453.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 61561510602 in words is "sixty-one billion, five hundred sixty-one million, five hundred ten thousand, six hundred two".