15782440980 has 24 divisors (see below), whose sum is σ = 44190834912. Its totient is φ = 4208650912.

The previous prime is 15782440939. The next prime is 15782440981. The reversal of 15782440980 is 8904428751.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15782440981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131520282 + ... + 131520401.

It is an arithmetic number, because the mean of its divisors is an integer number (1841284788).

Almost surely, 2^15782440980 is an apocalyptic number.

15782440980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15782440980 is an abundant number, since it is smaller than the sum of its proper divisors (28408393932).

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

15782440980 is a wasteful number, since it uses less digits than its factorization.

15782440980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263040695 (or 263040693 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 15782440980 in words is "fifteen billion, seven hundred eighty-two million, four hundred forty thousand, nine hundred eighty".