22029438375 has 432 divisors, whose sum is σ = 51793481376. Its totient is φ = 9307872000.

The previous prime is 22029438323. The next prime is 22029438391. The reversal of 22029438375 is 57383492022.

22029438375 is a `hidden beast` number, since 2 + 202 + 9 + 438 + 3 + 7 + 5 = 666.

It is not a de Polignac number, because 22029438375 - 2¹² = 22029434279 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 22029438375.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 537303355 + ... + 537303395.

It is an arithmetic number, because the mean of its divisors is an integer number (119892318).

Almost surely, 2^22029438375 is an apocalyptic number.

22029438375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22029438375 is an abundant number, since it is smaller than the sum of its proper divisors (29764043001).

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

22029438375 is an equidigital number, since it uses as much as digits as its factorization.

22029438375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 22029438375 in words is "twenty-two billion, twenty-nine million, four hundred thirty-eight thousand, three hundred seventy-five".