15722255136 has 96 divisors (see below), whose sum is σ = 47193366528. Its totient is φ = 4489539840.

The previous prime is 15722255057. The next prime is 15722255137. The reversal of 15722255136 is 63155222751.

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

It is a super-2 number, since 2×15722255136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15722255094 and 15722255103.

It is not an unprimeable number, because it can be changed into a prime (15722255137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1413051 + ... + 1424133.

It is an arithmetic number, because the mean of its divisors is an integer number (491597568).

Almost surely, 2^15722255136 is an apocalyptic number.

15722255136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15722255136 is an abundant number, since it is smaller than the sum of its proper divisors (31471111392).

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

15722255136 is a wasteful number, since it uses less digits than its factorization.

15722255136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13214 (or 13206 counting only the distinct ones).

The product of its digits is 126000, while the sum is 39.

Adding to 15722255136 its reverse (63155222751), we get a palindrome (78877477887).

The spelling of 15722255136 in words is "fifteen billion, seven hundred twenty-two million, two hundred fifty-five thousand, one hundred thirty-six".