20365507116 has 18 divisors (see below), whose sum is σ = 51479476412. Its totient is φ = 6788502360.

The previous prime is 20365507109. The next prime is 20365507117. The reversal of 20365507116 is 61170556302.

20365507116 is a `hidden beast` number, since 2 + 0 + 36 + 5 + 507 + 116 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 565708531 = 20365507116 / (2 + 0 + 3 + 6 + 5 + 5 + 0 + 7 + 1 + 1 + 6).

It is not an unprimeable number, because it can be changed into a prime (20365507117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 282854230 + ... + 282854301.

Almost surely, 2^20365507116 is an apocalyptic number.

It is an amenable number.

20365507116 is an abundant number, since it is smaller than the sum of its proper divisors (31113969296).

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

20365507116 is a wasteful number, since it uses less digits than its factorization.

20365507116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565708541 (or 565708536 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 20365507116 in words is "twenty billion, three hundred sixty-five million, five hundred seven thousand, one hundred sixteen".