61381964942 has 16 divisors (see below), whose sum is σ = 93386342400. Its totient is φ = 30254416920.

The previous prime is 61381964939. The next prime is 61381965017. The reversal of 61381964942 is 24946918316.

61381964942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 208142 + ... + 407537.

It is an arithmetic number, because the mean of its divisors is an integer number (5836646400).

Almost surely, 2^61381964942 is an apocalyptic number.

61381964942 is a deficient number, since it is larger than the sum of its proper divisors (32004377458).

61381964942 is a wasteful number, since it uses less digits than its factorization.

61381964942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616391.

The product of its digits is 2239488, while the sum is 53.

The spelling of 61381964942 in words is "sixty-one billion, three hundred eighty-one million, nine hundred sixty-four thousand, nine hundred forty-two".