16972502399 has 4 divisors (see below), whose sum is σ = 17046618360. Its totient is φ = 16898386440.

The previous prime is 16972502357. The next prime is 16972502413. The reversal of 16972502399 is 99320527961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16972502399 - 2¹² = 16972498303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16972502399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16972502699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37057637 + ... + 37058094.

It is an arithmetic number, because the mean of its divisors is an integer number (4261654590).

Almost surely, 2^16972502399 is an apocalyptic number.

16972502399 is a deficient number, since it is larger than the sum of its proper divisors (74115961).

16972502399 is an equidigital number, since it uses as much as digits as its factorization.

16972502399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74115960.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The spelling of 16972502399 in words is "sixteen billion, nine hundred seventy-two million, five hundred two thousand, three hundred ninety-nine".