20393690616 has 96 divisors (see below), whose sum is σ = 59508714720. Its totient is φ = 6272121600.

The previous prime is 20393690579. The next prime is 20393690621. The reversal of 20393690616 is 61609639302.

It is a happy number.

20393690616 is a `hidden beast` number, since 20 + 3 + 9 + 3 + 6 + 9 + 0 + 616 = 666.

It is a super-2 number, since 2×20393690616² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3058326 + ... + 3064986.

It is an arithmetic number, because the mean of its divisors is an integer number (619882445).

Almost surely, 2^20393690616 is an apocalyptic number.

20393690616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20393690616 is an abundant number, since it is smaller than the sum of its proper divisors (39115024104).

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

20393690616 is a wasteful number, since it uses less digits than its factorization.

20393690616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9957 (or 9950 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The spelling of 20393690616 in words is "twenty billion, three hundred ninety-three million, six hundred ninety thousand, six hundred sixteen".