21655114412602 has 32 divisors (see below), whose sum is σ = 35661063996864. Its totient is φ = 9780643728000.

The previous prime is 21655114412551. The next prime is 21655114412623. The reversal of 21655114412602 is 20621441155612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15305352 + ... + 16660252.

It is an arithmetic number, because the mean of its divisors is an integer number (1114408249902).

Almost surely, 2^{21655114412602} is an apocalyptic number.

21655114412602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21655114412602 is a deficient number, since it is larger than the sum of its proper divisors (14005949584262).

21655114412602 is a wasteful number, since it uses less digits than its factorization.

21655114412602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359534.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 21655114412602 in words is "twenty-one trillion, six hundred fifty-five billion, one hundred fourteen million, four hundred twelve thousand, six hundred two".