61243506372 has 12 divisors (see below), whose sum is σ = 142901514896. Its totient is φ = 20414502120.

The previous prime is 61243506343. The next prime is 61243506397. The reversal of 61243506372 is 27360534216.

61243506372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 61243506372.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2551812754 + ... + 2551812777.

Almost surely, 2^61243506372 is an apocalyptic number.

It is an amenable number.

61243506372 is an abundant number, since it is smaller than the sum of its proper divisors (81658008524).

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

61243506372 is a wasteful number, since it uses less digits than its factorization.

61243506372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103625538 (or 5103625536 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 61243506372 in words is "sixty-one billion, two hundred forty-three million, five hundred six thousand, three hundred seventy-two".