20903696370 has 24 divisors (see below), whose sum is σ = 54349610796. Its totient is φ = 5574319008.

The previous prime is 20903696369. The next prime is 20903696399. The reversal of 20903696370 is 7369630902.

20903696370 is a `hidden beast` number, since 2 + 0 + 9 + 0 + 3 + 6 + 9 + 637 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19551589929 + 1352106441 = 139827^2 + 36771^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116131557 + ... + 116131736.

Almost surely, 2^20903696370 is an apocalyptic number.

20903696370 is an abundant number, since it is smaller than the sum of its proper divisors (33445914426).

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

20903696370 is a wasteful number, since it uses less digits than its factorization.

20903696370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232263306 (or 232263303 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The spelling of 20903696370 in words is "twenty billion, nine hundred three million, six hundred ninety-six thousand, three hundred seventy".