21472264742877 has 32 divisors (see below), whose sum is σ = 34274882880000. Its totient is φ = 13207090792896.

The previous prime is 21472264742861. The next prime is 21472264742899. The reversal of 21472264742877 is 77824746227412.

21472264742877 is a `hidden beast` number, since 2 + 1 + 4 + 72 + 2 + 6 + 474 + 28 + 77 = 666.

It is not a de Polignac number, because 21472264742877 - 2⁴ = 21472264742861 is a prime.

It is a super-2 number, since 2×21472264742877² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21472264742177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14599638 + ... + 16002935.

It is an arithmetic number, because the mean of its divisors is an integer number (1071090090000).

Almost surely, 2^{21472264742877} is an apocalyptic number.

21472264742877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

21472264742877 is a deficient number, since it is larger than the sum of its proper divisors (12802618137123).

21472264742877 is a wasteful number, since it uses less digits than its factorization.

21472264742877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30604594 (or 30604588 counting only the distinct ones).

The product of its digits is 118013952, while the sum is 63.

The spelling of 21472264742877 in words is "twenty-one trillion, four hundred seventy-two billion, two hundred sixty-four million, seven hundred forty-two thousand, eight hundred seventy-seven".