21874567134956 has 6 divisors (see below), whose sum is σ = 38280492486180. Its totient is φ = 10937283567476.

The previous prime is 21874567134943. The next prime is 21874567135019. The reversal of 21874567134956 is 65943176547812.

It is a super-3 number, since 3×21874567134956³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2734320891866 + ... + 2734320891873.

It is an arithmetic number, because the mean of its divisors is an integer number (6380082081030).

Almost surely, 2^{21874567134956} is an apocalyptic number.

It is an amenable number.

21874567134956 is a deficient number, since it is larger than the sum of its proper divisors (16405925351224).

21874567134956 is a wasteful number, since it uses less digits than its factorization.

21874567134956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468641783743 (or 5468641783741 counting only the distinct ones).

The product of its digits is 304819200, while the sum is 68.

The spelling of 21874567134956 in words is "twenty-one trillion, eight hundred seventy-four billion, five hundred sixty-seven million, one hundred thirty-four thousand, nine hundred fifty-six".