15980805950 has 192 divisors, whose sum is σ = 34011394560. Its totient is φ = 5556418560.

The previous prime is 15980805947. The next prime is 15980805959. The reversal of 15980805950 is 5950808951.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15980805959) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 68587034 + ... + 68587266.

It is an arithmetic number, because the mean of its divisors is an integer number (177142680).

Almost surely, 2^15980805950 is an apocalyptic number.

15980805950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15980805950 is an abundant number, since it is smaller than the sum of its proper divisors (18030588610).

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

15980805950 is a wasteful number, since it uses less digits than its factorization.

15980805950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 50.

The spelling of 15980805950 in words is "fifteen billion, nine hundred eighty million, eight hundred five thousand, nine hundred fifty".