21013593695136 has 240 divisors, whose sum is σ = 70633482708096. Its totient is φ = 6003504843264.

The previous prime is 21013593695113. The next prime is 21013593695191. The reversal of 21013593695136 is 63159639531012.

21013593695136 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 35 + 93 + 6 + 9 + 513 + 6 = 666.

It is a super-2 number, since 2×21013593695136² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 420861405 + ... + 420911331.

Almost surely, 2^{21013593695136} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21013593695136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35316741354048).

21013593695136 is an abundant number, since it is smaller than the sum of its proper divisors (49619889012960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21013593695136 is a wasteful number, since it uses less digits than its factorization.

21013593695136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73153 (or 73136 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 54.

The spelling of 21013593695136 in words is "twenty-one trillion, thirteen billion, five hundred ninety-three million, six hundred ninety-five thousand, one hundred thirty-six".