20314772517 has 16 divisors (see below), whose sum is σ = 30438188928. Its totient is φ = 11957858880.

The previous prime is 20314772497. The next prime is 20314772521. The reversal of 20314772517 is 71527741302.

It is not a de Polignac number, because 20314772517 - 2¹⁶ = 20314706981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314772417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11322834 + ... + 11324627.

It is an arithmetic number, because the mean of its divisors is an integer number (1902386808).

Almost surely, 2^20314772517 is an apocalyptic number.

It is an amenable number.

20314772517 is a deficient number, since it is larger than the sum of its proper divisors (10123416411).

20314772517 is a wasteful number, since it uses less digits than its factorization.

20314772517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22647500.

The product of its (nonzero) digits is 82320, while the sum is 39.

The spelling of 20314772517 in words is "twenty billion, three hundred fourteen million, seven hundred seventy-two thousand, five hundred seventeen".