20907162347 has 2 divisors, whose sum is σ = 20907162348. Its totient is φ = 20907162346.

The previous prime is 20907162319. The next prime is 20907162359. The reversal of 20907162347 is 74326170902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20907162347 - 2⁸ = 20907162091 is a prime.

It is not a weakly prime, because it can be changed into another prime (20907162047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10453581173 + 10453581174.

It is an arithmetic number, because the mean of its divisors is an integer number (10453581174).

Almost surely, 2^20907162347 is an apocalyptic number.

20907162347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20907162347 is an equidigital number, since it uses as much as digits as its factorization.

20907162347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 20907162347 in words is "twenty billion, nine hundred seven million, one hundred sixty-two thousand, three hundred forty-seven".