21656060657002 has 16 divisors (see below), whose sum is σ = 34199207085600. Its totient is φ = 10256505865200.

The previous prime is 21656060656999. The next prime is 21656060657029. The reversal of 21656060657002 is 20075606065612.

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, 44983252 + ... + 45462127.

It is an arithmetic number, because the mean of its divisors is an integer number (2137450442850).

Almost surely, 2^{21656060657002} is an apocalyptic number.

21656060657002 is a deficient number, since it is larger than the sum of its proper divisors (12543146428598).

21656060657002 is a wasteful number, since it uses less digits than its factorization.

21656060657002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90451701.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 21656060657002 in words is "twenty-one trillion, six hundred fifty-six billion, sixty million, six hundred fifty-seven thousand, two".