55980639718940 has 48 divisors (see below), whose sum is σ = 121930642068480. Its totient is φ = 21563659676160.

The previous prime is 55980639718933. The next prime is 55980639718957. The reversal of 55980639718940 is 4981793608955.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125780921 + ... + 126225200.

It is an arithmetic number, because the mean of its divisors is an integer number (2540221709760).

Almost surely, 2^{55980639718940} is an apocalyptic number.

It is an amenable number.

55980639718940 is an abundant number, since it is smaller than the sum of its proper divisors (65950002349540).

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

55980639718940 is a wasteful number, since it uses less digits than its factorization.

55980639718940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252006542 (or 252006540 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 74.

The spelling of 55980639718940 in words is "fifty-five trillion, nine hundred eighty billion, six hundred thirty-nine million, seven hundred eighteen thousand, nine hundred forty".