20702431265 has 8 divisors (see below), whose sum is σ = 24848456640. Its totient is φ = 16558252272.

The previous prime is 20702431223. The next prime is 20702431271. The reversal of 20702431265 is 56213420702.

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

It is a cyclic number.

It is not a de Polignac number, because 20702431265 - 2¹² = 20702427169 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436805 + ... + 481874.

It is an arithmetic number, because the mean of its divisors is an integer number (3106057080).

Almost surely, 2^20702431265 is an apocalyptic number.

It is an amenable number.

20702431265 is a deficient number, since it is larger than the sum of its proper divisors (4146025375).

20702431265 is an equidigital number, since it uses as much as digits as its factorization.

20702431265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923191.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 20702431265 its reverse (56213420702), we get a palindrome (76915851967).

The spelling of 20702431265 in words is "twenty billion, seven hundred two million, four hundred thirty-one thousand, two hundred sixty-five".