15720877950 has 24 divisors (see below), whose sum is σ = 38987777688. Its totient is φ = 4192234080.

The previous prime is 15720877937. The next prime is 15720877973. The reversal of 15720877950 is 5977802751.

It is a junction number, because it is equal to n+sod(n) for n = 15720877893 and 15720877902.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 52402777 + ... + 52403076.

It is an arithmetic number, because the mean of its divisors is an integer number (1624490737).

Almost surely, 2^15720877950 is an apocalyptic number.

15720877950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15720877950 is an abundant number, since it is smaller than the sum of its proper divisors (23266899738).

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

15720877950 is a wasteful number, since it uses less digits than its factorization.

15720877950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104805868 (or 104805863 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 51.

The spelling of 15720877950 in words is "fifteen billion, seven hundred twenty million, eight hundred seventy-seven thousand, nine hundred fifty".