21477362030657 has 16 divisors (see below), whose sum is σ = 24135795062400. Its totient is φ = 18962740127232.

The previous prime is 21477362030623. The next prime is 21477362030693. The reversal of 21477362030657 is 75603026377412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21477362030657 is a prime.

It is a super-2 number, since 2×21477362030657² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21477362030599 and 21477362030608.

It is not an unprimeable number, because it can be changed into a prime (21477362030557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9473969 + ... + 11520017.

It is an arithmetic number, because the mean of its divisors is an integer number (1508487191400).

Almost surely, 2^{21477362030657} is an apocalyptic number.

It is an amenable number.

21477362030657 is a deficient number, since it is larger than the sum of its proper divisors (2658433031743).

21477362030657 is a wasteful number, since it uses less digits than its factorization.

21477362030657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081192.

The product of its (nonzero) digits is 8890560, while the sum is 53.

The spelling of 21477362030657 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred sixty-two million, thirty thousand, six hundred fifty-seven".