20295916717 has 8 divisors (see below), whose sum is σ = 21374420960. Its totient is φ = 19218442320.

The previous prime is 20295916681. The next prime is 20295916727. The reversal of 20295916717 is 71761959202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20295916717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20295916727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216834 + ... + 295987.

It is an arithmetic number, because the mean of its divisors is an integer number (2671802620).

Almost surely, 2^20295916717 is an apocalyptic number.

It is an amenable number.

20295916717 is a deficient number, since it is larger than the sum of its proper divisors (1078504243).

20295916717 is a wasteful number, since it uses less digits than its factorization.

20295916717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514923.

The product of its (nonzero) digits is 476280, while the sum is 49.

The spelling of 20295916717 in words is "twenty billion, two hundred ninety-five million, nine hundred sixteen thousand, seven hundred seventeen".