21477314403745 has 32 divisors (see below), whose sum is σ = 26695752791040. Its totient is φ = 16568066592000.

The previous prime is 21477314403719. The next prime is 21477314403793. The reversal of 21477314403745 is 54730441377412.

It is not a de Polignac number, because 21477314403745 - 2⁷ = 21477314403617 is a prime.

It is a super-2 number, since 2×21477314403745² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21477314403692 and 21477314403701.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 577779010 + ... + 577816180.

It is an arithmetic number, because the mean of its divisors is an integer number (834242274720).

Almost surely, 2^{21477314403745} is an apocalyptic number.

It is an amenable number.

21477314403745 is a deficient number, since it is larger than the sum of its proper divisors (5218438387295).

21477314403745 is a wasteful number, since it uses less digits than its factorization.

21477314403745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42217.

The product of its (nonzero) digits is 7902720, while the sum is 52.

The spelling of 21477314403745 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred fourteen million, four hundred three thousand, seven hundred forty-five".