21410651415 has 32 divisors (see below), whose sum is σ = 34993632960. Its totient is φ = 11174598656.

The previous prime is 21410651393. The next prime is 21410651419. The reversal of 21410651415 is 51415601412.

It is a cyclic number.

It is not a de Polignac number, because 21410651415 - 2⁸ = 21410651159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410651419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274639 + ... + 343871.

It is an arithmetic number, because the mean of its divisors is an integer number (1093551030).

Almost surely, 2^21410651415 is an apocalyptic number.

21410651415 is a deficient number, since it is larger than the sum of its proper divisors (13582981545).

21410651415 is a wasteful number, since it uses less digits than its factorization.

21410651415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69683.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 21410651415 in words is "twenty-one billion, four hundred ten million, six hundred fifty-one thousand, four hundred fifteen".