21601677313013 has 8 divisors (see below), whose sum is σ = 24744646532928. Its totient is φ = 18472961922624.

The previous prime is 21601677312973. The next prime is 21601677313057. The reversal of 21601677313013 is 31031377610612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21601677313013 - 2⁶ = 21601677312949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21601677315013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3563454131 + ... + 3563460192.

It is an arithmetic number, because the mean of its divisors is an integer number (3093080816616).

Almost surely, 2^{21601677313013} is an apocalyptic number.

It is an amenable number.

21601677313013 is a deficient number, since it is larger than the sum of its proper divisors (3142969219915).

21601677313013 is an equidigital number, since it uses as much as digits as its factorization.

21601677313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7126914763.

The product of its (nonzero) digits is 95256, while the sum is 41.

The spelling of 21601677313013 in words is "twenty-one trillion, six hundred one billion, six hundred seventy-seven million, three hundred thirteen thousand, thirteen".