20307893507 has 16 divisors (see below), whose sum is σ = 23841804384. Its totient is φ = 17090880000.

The previous prime is 20307893491. The next prime is 20307893513. The reversal of 20307893507 is 70539870302.

It is a cyclic number.

It is not a de Polignac number, because 20307893507 - 2⁴ = 20307893491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20307890507) 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, 878744 + ... + 901557.

It is an arithmetic number, because the mean of its divisors is an integer number (1490112774).

Almost surely, 2^20307893507 is an apocalyptic number.

20307893507 is a deficient number, since it is larger than the sum of its proper divisors (3533910877).

20307893507 is a wasteful number, since it uses less digits than its factorization.

20307893507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780390.

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 20307893507 in words is "twenty billion, three hundred seven million, eight hundred ninety-three thousand, five hundred seven".