61937639000 has 64 divisors (see below), whose sum is σ = 144989395200. Its totient is φ = 24765600000.

The previous prime is 61937638999. The next prime is 61937639009. The reversal of 61937639000 is 93673916.

It is a happy number.

It is a super-2 number, since 2×61937639000² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61937639009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2990681 + ... + 3011319.

It is an arithmetic number, because the mean of its divisors is an integer number (2265459300).

Almost surely, 2^61937639000 is an apocalyptic number.

It is an amenable number.

61937639000 is an abundant number, since it is smaller than the sum of its proper divisors (83051756200).

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

61937639000 is a wasteful number, since it uses less digits than its factorization.

61937639000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23661 (or 23647 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 44.

The spelling of 61937639000 in words is "sixty-one billion, nine hundred thirty-seven million, six hundred thirty-nine thousand".