21415408814076 has 24 divisors (see below), whose sum is σ = 50230906543104. Its totient is φ = 7101095417520.

The previous prime is 21415408814057. The next prime is 21415408814083. The reversal of 21415408814076 is 67041880451412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4671771010 + ... + 4671775593.

It is an arithmetic number, because the mean of its divisors is an integer number (2092954439296).

Almost surely, 2^{21415408814076} is an apocalyptic number.

It is an amenable number.

21415408814076 is an abundant number, since it is smaller than the sum of its proper divisors (28815497729028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21415408814076 is a wasteful number, since it uses less digits than its factorization.

21415408814076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9343546801 (or 9343546799 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 21415408814076 in words is "twenty-one trillion, four hundred fifteen billion, four hundred eight million, eight hundred fourteen thousand, seventy-six".