30020839157 has 2 divisors, whose sum is σ = 30020839158. Its totient is φ = 30020839156.

The previous prime is 30020839133. The next prime is 30020839183. The reversal of 30020839157 is 75193802003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26856326641 + 3164512516 = 163879^2 + 56254^2 .

It is a cyclic number.

It is not a de Polignac number, because 30020839157 - 2³² = 25725871861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30020839157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30020839117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15010419578 + 15010419579.

It is an arithmetic number, because the mean of its divisors is an integer number (15010419579).

Almost surely, 2^30020839157 is an apocalyptic number.

It is an amenable number.

30020839157 is a deficient number, since it is larger than the sum of its proper divisors (1).

30020839157 is an equidigital number, since it uses as much as digits as its factorization.

30020839157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 30020839157 in words is "thirty billion, twenty million, eight hundred thirty-nine thousand, one hundred fifty-seven".