15761320120 has 128 divisors (see below), whose sum is σ = 43729943040. Its totient is φ = 4978690560.

The previous prime is 15761320093. The next prime is 15761320153. The reversal of 15761320120 is 2102316751.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2045475 + ... + 2053165.

It is an arithmetic number, because the mean of its divisors is an integer number (341640180).

Almost surely, 2^15761320120 is an apocalyptic number.

15761320120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15761320120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21864971520).

15761320120 is an abundant number, since it is smaller than the sum of its proper divisors (27968622920).

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

15761320120 is a wasteful number, since it uses less digits than its factorization.

15761320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285 (or 8281 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

Adding to 15761320120 its reverse (2102316751), we get a palindrome (17863636871).

The spelling of 15761320120 in words is "fifteen billion, seven hundred sixty-one million, three hundred twenty thousand, one hundred twenty".