15949509880 has 64 divisors (see below), whose sum is σ = 36358087680. Its totient is φ = 6296400000.

The previous prime is 15949509857. The next prime is 15949509887. The reversal of 15949509880 is 8890594951.

It is a super-2 number, since 2×15949509880² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15949509887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1153005 + ... + 1166755.

It is an arithmetic number, because the mean of its divisors is an integer number (568095120).

Almost surely, 2^15949509880 is an apocalyptic number.

15949509880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15949509880 is an abundant number, since it is smaller than the sum of its proper divisors (20408577800).

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

15949509880 is a wasteful number, since it uses less digits than its factorization.

15949509880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14140 (or 14136 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 58.

The spelling of 15949509880 in words is "fifteen billion, nine hundred forty-nine million, five hundred nine thousand, eight hundred eighty".