15697271111480 has 128 divisors (see below), whose sum is σ = 40503620868480. Its totient is φ = 5363382435840.

The previous prime is 15697271111479. The next prime is 15697271111503. The reversal of 15697271111480 is 8411117279651.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137908352 + ... + 138022128.

It is an arithmetic number, because the mean of its divisors is an integer number (316434538035).

Almost surely, 2^{15697271111480} is an apocalyptic number.

15697271111480 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 15697271111480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20251810434240).

15697271111480 is an abundant number, since it is smaller than the sum of its proper divisors (24806349757000).

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

15697271111480 is a wasteful number, since it uses less digits than its factorization.

15697271111480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115489 (or 115485 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 53.

The spelling of 15697271111480 in words is "fifteen trillion, six hundred ninety-seven billion, two hundred seventy-one million, one hundred eleven thousand, four hundred eighty".