15329730393972 has 18 divisors (see below), whose sum is σ = 38750151829298. Its totient is φ = 5109910131312.

The previous prime is 15329730393961. The next prime is 15329730393973. The reversal of 15329730393972 is 27939303792351.

15329730393972 is a `hidden beast` number, since 1 + 5 + 3 + 297 + 303 + 9 + 39 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15002871209316 + 326859184656 = 3873354^2 + 571716^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15329730393973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212912922103 + ... + 212912922174.

Almost surely, 2^{15329730393972} is an apocalyptic number.

15329730393972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15329730393972 is an abundant number, since it is smaller than the sum of its proper divisors (23420421435326).

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

15329730393972 is a wasteful number, since it uses less digits than its factorization.

15329730393972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425825844287 (or 425825844282 counting only the distinct ones).

The product of its (nonzero) digits is 57868020, while the sum is 63.

The spelling of 15329730393972 in words is "fifteen trillion, three hundred twenty-nine billion, seven hundred thirty million, three hundred ninety-three thousand, nine hundred seventy-two".