21013383003685 has 32 divisors (see below), whose sum is σ = 26479892035584. Its totient is φ = 15987396384000.

The previous prime is 21013383003647. The next prime is 21013383003689. The reversal of 21013383003685 is 58630038331012.

It is not a de Polignac number, because 21013383003685 - 2²¹ = 21013380906533 is a prime.

It is a super-3 number, since 3×21013383003685³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013383003689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9566400 + ... + 11556070.

It is an arithmetic number, because the mean of its divisors is an integer number (827496626112).

Almost surely, 2^{21013383003685} is an apocalyptic number.

It is an amenable number.

21013383003685 is a deficient number, since it is larger than the sum of its proper divisors (5466509031899).

21013383003685 is a wasteful number, since it uses less digits than its factorization.

21013383003685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990885.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 21013383003685 in words is "twenty-one trillion, thirteen billion, three hundred eighty-three million, three thousand, six hundred eighty-five".