21602650706475 has 12 divisors (see below), whose sum is σ = 35716382501496. Its totient is φ = 11521413710080.

The previous prime is 21602650706467. The next prime is 21602650706503. The reversal of 21602650706475 is 57460705620612.

It is not a de Polignac number, because 21602650706475 - 2³ = 21602650706467 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 144017671302 + ... + 144017671451.

It is an arithmetic number, because the mean of its divisors is an integer number (2976365208458).

Almost surely, 2^{21602650706475} is an apocalyptic number.

21602650706475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21602650706475 is a deficient number, since it is larger than the sum of its proper divisors (14113731795021).

21602650706475 is a wasteful number, since it uses less digits than its factorization.

21602650706475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288035342766 (or 288035342761 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 21602650706475 in words is "twenty-one trillion, six hundred two billion, six hundred fifty million, seven hundred six thousand, four hundred seventy-five".