15492157992 has 288 divisors, whose sum is σ = 45803197440. Its totient is φ = 4724697600.

The previous prime is 15492157979. The next prime is 15492158009. The reversal of 15492157992 is 29975129451.

It is a happy number.

15492157992 is a `hidden beast` number, since 1 + 5 + 49 + 21 + 579 + 9 + 2 = 666.

15492157992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 121985433 + ... + 121985559.

It is an arithmetic number, because the mean of its divisors is an integer number (159038880).

Almost surely, 2^15492157992 is an apocalyptic number.

15492157992 is a gapful number since it is divisible by the number (12) 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 15492157992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22901598720).

15492157992 is an abundant number, since it is smaller than the sum of its proper divisors (30311039448).

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

15492157992 is a wasteful number, since it uses less digits than its factorization.

15492157992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 247 counting only the distinct ones).

The product of its digits is 2041200, while the sum is 54.

The spelling of 15492157992 in words is "fifteen billion, four hundred ninety-two million, one hundred fifty-seven thousand, nine hundred ninety-two".