15972210799 has 8 divisors (see below), whose sum is σ = 16142367920. Its totient is φ = 15802166016.

The previous prime is 15972210773. The next prime is 15972210811. The reversal of 15972210799 is 99701227951.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15972210799 - 2⁵ = 15972210767 is a prime.

It is a super-2 number, since 2×15972210799² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15972210739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275092 + ... + 328054.

It is an arithmetic number, because the mean of its divisors is an integer number (2017795990).

Almost surely, 2^15972210799 is an apocalyptic number.

15972210799 is a deficient number, since it is larger than the sum of its proper divisors (170157121).

15972210799 is an equidigital number, since it uses as much as digits as its factorization.

15972210799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56169.

The product of its (nonzero) digits is 714420, while the sum is 52.

The spelling of 15972210799 in words is "fifteen billion, nine hundred seventy-two million, two hundred ten thousand, seven hundred ninety-nine".