26628238938 has 32 divisors (see below), whose sum is σ = 61117119360. Its totient is φ = 7576496640.

The previous prime is 26628238913. The next prime is 26628238939. The reversal of 26628238938 is 83983282662.

It is not an unprimeable number, because it can be changed into a prime (26628238939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1305243 + ... + 1325486.

It is an arithmetic number, because the mean of its divisors is an integer number (1909909980).

Almost surely, 2^26628238938 is an apocalyptic number.

26628238938 is an abundant number, since it is smaller than the sum of its proper divisors (34488880422).

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

26628238938 is a wasteful number, since it uses less digits than its factorization.

26628238938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630982.

The product of its digits is 11943936, while the sum is 57.

The spelling of 26628238938 in words is "twenty-six billion, six hundred twenty-eight million, two hundred thirty-eight thousand, nine hundred thirty-eight".