20902093007 has 4 divisors (see below), whose sum is σ = 21040517616. Its totient is φ = 20763668400.

The previous prime is 20902092961. The next prime is 20902093013. The reversal of 20902093007 is 70039020902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20902093007 - 2²⁴ = 20885315791 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 (20902093507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69212078 + ... + 69212379.

It is an arithmetic number, because the mean of its divisors is an integer number (5260129404).

Almost surely, 2^20902093007 is an apocalyptic number.

20902093007 is a deficient number, since it is larger than the sum of its proper divisors (138424609).

20902093007 is a wasteful number, since it uses less digits than its factorization.

20902093007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138424608.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 20902093007 in words is "twenty billion, nine hundred two million, ninety-three thousand, seven".