16372638407 has 2 divisors, whose sum is σ = 16372638408. Its totient is φ = 16372638406.

The previous prime is 16372638383. The next prime is 16372638413. The reversal of 16372638407 is 70483627361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16372638407 - 2¹⁸ = 16372376263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16372638427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8186319203 + 8186319204.

It is an arithmetic number, because the mean of its divisors is an integer number (8186319204).

Almost surely, 2^16372638407 is an apocalyptic number.

16372638407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16372638407 is an equidigital number, since it uses as much as digits as its factorization.

16372638407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 47.

It can be divided in two parts, 16372638 and 407, that multiplied together give a palindrome (6663663666).

The spelling of 16372638407 in words is "sixteen billion, three hundred seventy-two million, six hundred thirty-eight thousand, four hundred seven".