21477362355436 has 12 divisors (see below), whose sum is σ = 40476567516112. Its totient is φ = 9912628779408.

The previous prime is 21477362355347. The next prime is 21477362355473. The reversal of 21477362355436 is 63455326377412.

It is a super-2 number, since 2×21477362355436² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206513099520 + ... + 206513099623.

Almost surely, 2^{21477362355436} is an apocalyptic number.

21477362355436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21477362355436 is a deficient number, since it is larger than the sum of its proper divisors (18999205160676).

21477362355436 is a wasteful number, since it uses less digits than its factorization.

21477362355436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413026199160 (or 413026199158 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 58.

The spelling of 21477362355436 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred sixty-two million, three hundred fifty-five thousand, four hundred thirty-six".