15722551121772 has 96 divisors (see below), whose sum is σ = 40928435057664. Its totient is φ = 4657471790400.

The previous prime is 15722551121747. The next prime is 15722551121777. The reversal of 15722551121772 is 27712115522751.

It is a super-2 number, since 2×15722551121772² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15722551121777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5626798 + ... + 7943925.

It is an arithmetic number, because the mean of its divisors is an integer number (426337865184).

Almost surely, 2^{15722551121772} is an apocalyptic number.

15722551121772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15722551121772 is an abundant number, since it is smaller than the sum of its proper divisors (25205883935892).

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

15722551121772 is a wasteful number, since it uses less digits than its factorization.

15722551121772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13570939 (or 13570937 counting only the distinct ones).

The product of its digits is 686000, while the sum is 48.

The spelling of 15722551121772 in words is "fifteen trillion, seven hundred twenty-two billion, five hundred fifty-one million, one hundred twenty-one thousand, seven hundred seventy-two".