16372642506 has 128 divisors (see below), whose sum is σ = 39613556736. Its totient is φ = 4450068480.

The previous prime is 16372642501. The next prime is 16372642519. The reversal of 16372642506 is 60524627361.

It is not an unprimeable number, because it can be changed into a prime (16372642501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8076265 + ... + 8078291.

It is an arithmetic number, because the mean of its divisors is an integer number (309480912).

Almost surely, 2^16372642506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16372642506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19806778368).

16372642506 is an abundant number, since it is smaller than the sum of its proper divisors (23240914230).

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

16372642506 is a wasteful number, since it uses less digits than its factorization.

16372642506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 16372642506 in words is "sixteen billion, three hundred seventy-two million, six hundred forty-two thousand, five hundred six".