21752275400 has 48 divisors (see below), whose sum is σ = 53235841200. Its totient is φ = 8242966080.

The previous prime is 21752275399. The next prime is 21752275417. The reversal of 21752275400 is 457225712.

It is a super-2 number, since 2×21752275400² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2858342 + ... + 2865941.

It is an arithmetic number, because the mean of its divisors is an integer number (1109080025).

Almost surely, 2^21752275400 is an apocalyptic number.

21752275400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21752275400 is an abundant number, since it is smaller than the sum of its proper divisors (31483565800).

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

21752275400 is a wasteful number, since it uses less digits than its factorization.

21752275400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724318 (or 5724309 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 21752275400 in words is "twenty-one billion, seven hundred fifty-two million, two hundred seventy-five thousand, four hundred".