21477314476244 has 12 divisors (see below), whose sum is σ = 41002145818368. Its totient is φ = 9762415671000.

The previous prime is 21477314476237. The next prime is 21477314476309. The reversal of 21477314476244 is 44267441377412.

It is a super-2 number, since 2×21477314476244² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 21477314476244.

It is a congruent number.

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, 244060391732 + ... + 244060391819.

It is an arithmetic number, because the mean of its divisors is an integer number (3416845484864).

Almost surely, 2^{21477314476244} is an apocalyptic number.

It is an amenable number.

21477314476244 is a deficient number, since it is larger than the sum of its proper divisors (19524831342124).

21477314476244 is a wasteful number, since it uses less digits than its factorization.

21477314476244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488120783566 (or 488120783564 counting only the distinct ones).

The product of its digits is 25288704, while the sum is 56.

The spelling of 21477314476244 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, four hundred seventy-six thousand, two hundred forty-four".