49319581980 has 24 divisors (see below), whose sum is σ = 138094829712. Its totient is φ = 13151888512.

The previous prime is 49319581951. The next prime is 49319582009. The reversal of 49319581980 is 8918591394.

It is an interprime number because it is at equal distance from previous prime (49319581951) and next prime (49319582009).

It is a self number, because there is not a number n which added to its sum of digits gives 49319581980.

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, 410996457 + ... + 410996576.

It is an arithmetic number, because the mean of its divisors is an integer number (5753951238).

Almost surely, 2^49319581980 is an apocalyptic number.

It is an amenable number.

49319581980 is an abundant number, since it is smaller than the sum of its proper divisors (88775247732).

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

49319581980 is a wasteful number, since it uses less digits than its factorization.

49319581980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821993045 (or 821993043 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 57.

The spelling of 49319581980 in words is "forty-nine billion, three hundred nineteen million, five hundred eighty-one thousand, nine hundred eighty".