21566158160602 has 16 divisors (see below), whose sum is σ = 35457328547424. Its totient is φ = 9756340398000.

The previous prime is 21566158160497. The next prime is 21566158160629. The reversal of 21566158160602 is 20606185166512.

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, 2322933549 + ... + 2322942832.

It is an arithmetic number, because the mean of its divisors is an integer number (2216083034214).

Almost surely, 2^{21566158160602} is an apocalyptic number.

21566158160602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21566158160602 is a deficient number, since it is larger than the sum of its proper divisors (13891170386822).

21566158160602 is a wasteful number, since it uses less digits than its factorization.

21566158160602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645876605.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 21566158160602 in words is "twenty-one trillion, five hundred sixty-six billion, one hundred fifty-eight million, one hundred sixty thousand, six hundred two".