15722797056 has 96 divisors (see below), whose sum is σ = 43740103680. Its totient is φ = 5013020672.

The previous prime is 15722797039. The next prime is 15722797081. The reversal of 15722797056 is 65079722751.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-4 number, since 4×15722797056⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85681 + ... + 196943.

It is an arithmetic number, because the mean of its divisors is an integer number (455626080).

Almost surely, 2^15722797056 is an apocalyptic number.

15722797056 is a gapful number since it is divisible by the number (16) 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 15722797056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21870051840).

15722797056 is an abundant number, since it is smaller than the sum of its proper divisors (28017306624).

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

15722797056 is a wasteful number, since it uses less digits than its factorization.

15722797056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111311 (or 111291 counting only the distinct ones).

The product of its (nonzero) digits is 1852200, while the sum is 51.

The spelling of 15722797056 in words is "fifteen billion, seven hundred twenty-two million, seven hundred ninety-seven thousand, fifty-six".