61837647942 has 64 divisors (see below), whose sum is σ = 143346438144. Its totient is φ = 17419013280.

The previous prime is 61837647919. The next prime is 61837647943. The reversal of 61837647942 is 24974673816.

61837647942 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 not an unprimeable number, because it can be changed into a prime (61837647943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 950517 + ... + 1013487.

It is an arithmetic number, because the mean of its divisors is an integer number (2239788096).

Almost surely, 2^61837647942 is an apocalyptic number.

61837647942 is an abundant number, since it is smaller than the sum of its proper divisors (81508790202).

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

61837647942 is a wasteful number, since it uses less digits than its factorization.

61837647942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63313.

The product of its digits is 12192768, while the sum is 57.

The spelling of 61837647942 in words is "sixty-one billion, eight hundred thirty-seven million, six hundred forty-seven thousand, nine hundred forty-two".