22257137440 has 48 divisors (see below), whose sum is σ = 52642776312. Its totient is φ = 8892647424.

The previous prime is 22257137423. The next prime is 22257137447. The reversal of 22257137440 is 4473175222.

It can be written as a sum of positive squares in 4 ways, for example, as 21560810896 + 696326544 = 146836^2 + 26388^2 .

It is a super-3 number, since 3×22257137440³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22257137440.

It is not an unprimeable number, because it can be changed into a prime (22257137447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61012 + ... + 219628.

Almost surely, 2^22257137440 is an apocalyptic number.

22257137440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22257137440 is an abundant number, since it is smaller than the sum of its proper divisors (30385638872).

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

22257137440 is a wasteful number, since it uses less digits than its factorization.

22257137440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159509 (or 159501 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 37.

The spelling of 22257137440 in words is "twenty-two billion, two hundred fifty-seven million, one hundred thirty-seven thousand, four hundred forty".