22133731156540 has 24 divisors (see below), whose sum is σ = 46481843469600. Its totient is φ = 8853300454848.

The previous prime is 22133731156513. The next prime is 22133731156571. The reversal of 22133731156540 is 4565113733122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11053407 + ... + 12901366.

It is an arithmetic number, because the mean of its divisors is an integer number (1936743477900).

Almost surely, 2^{22133731156540} is an apocalyptic number.

22133731156540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22133731156540 is an abundant number, since it is smaller than the sum of its proper divisors (24348112313060).

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

22133731156540 is a wasteful number, since it uses less digits than its factorization.

22133731156540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24000981 (or 24000979 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

Adding to 22133731156540 its reverse (4565113733122), we get a palindrome (26698844889662).

The spelling of 22133731156540 in words is "twenty-two trillion, one hundred thirty-three billion, seven hundred thirty-one million, one hundred fifty-six thousand, five hundred forty".