61941621506040 has 96 divisors (see below), whose sum is σ = 201311675866080. Its totient is φ = 16517650373376.

The previous prime is 61941621506033. The next prime is 61941621506057. The reversal of 61941621506040 is 4060512614916.

61941621506040 is a `hidden beast` number, since 6 + 1 + 9 + 4 + 16 + 21 + 5 + 0 + 604 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59298757 + ... + 60334283.

It is an arithmetic number, because the mean of its divisors is an integer number (2096996623605).

Almost surely, 2^{61941621506040} is an apocalyptic number.

61941621506040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61941621506040 is an abundant number, since it is smaller than the sum of its proper divisors (139370054360040).

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

61941621506040 is a wasteful number, since it uses less digits than its factorization.

61941621506040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201701 (or 1201694 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 61941621506040 in words is "sixty-one trillion, nine hundred forty-one billion, six hundred twenty-one million, five hundred six thousand, forty".