21477314403763 has 4 divisors (see below), whose sum is σ = 21479643587088. Its totient is φ = 21474985220440.

The previous prime is 21477314403719. The next prime is 21477314403793. The reversal of 21477314403763 is 36730441377412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21477314403763 is a prime.

It is a super-2 number, since 2×21477314403763² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21477314403763.

It is not an unprimeable number, because it can be changed into a prime (21477314403793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1164577831 + ... + 1164596272.

It is an arithmetic number, because the mean of its divisors is an integer number (5369910896772).

Almost surely, 2^{21477314403763} is an apocalyptic number.

21477314403763 is a deficient number, since it is larger than the sum of its proper divisors (2329183325).

21477314403763 is an equidigital number, since it uses as much as digits as its factorization.

21477314403763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329183324.

The product of its (nonzero) digits is 7112448, while the sum is 52.

The spelling of 21477314403763 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, four hundred three thousand, seven hundred sixty-three".