20651370294 has 64 divisors (see below), whose sum is σ = 44258952960. Its totient is φ = 6404469120.

The previous prime is 20651370283. The next prime is 20651370343. The reversal of 20651370294 is 49207315602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5262217 + ... + 5266139.

It is an arithmetic number, because the mean of its divisors is an integer number (691546140).

Almost surely, 2^20651370294 is an apocalyptic number.

20651370294 is an abundant number, since it is smaller than the sum of its proper divisors (23607582666).

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

20651370294 is a wasteful number, since it uses less digits than its factorization.

20651370294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765.

The product of its (nonzero) digits is 90720, while the sum is 39.

Adding to 20651370294 its reverse (49207315602), we get a palindrome (69858685896).

The spelling of 20651370294 in words is "twenty billion, six hundred fifty-one million, three hundred seventy thousand, two hundred ninety-four".