22157570790 has 64 divisors (see below), whose sum is σ = 59218776000. Its totient is φ = 5895493632.

The previous prime is 22157570767. The next prime is 22157570797. The reversal of 22157570790 is 9707575122.

22157570790 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 7 + 570 + 79 + 0 = 666.

It is a super-2 number, since 2×22157570790² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157570797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29844 + ... + 212616.

It is an arithmetic number, because the mean of its divisors is an integer number (925293375).

Almost surely, 2^22157570790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22157570790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29609388000).

22157570790 is an abundant number, since it is smaller than the sum of its proper divisors (37061205210).

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

22157570790 is a wasteful number, since it uses less digits than its factorization.

22157570790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183238 (or 183232 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The spelling of 22157570790 in words is "twenty-two billion, one hundred fifty-seven million, five hundred seventy thousand, seven hundred ninety".