30869787139 has 2 divisors, whose sum is σ = 30869787140. Its totient is φ = 30869787138.

The previous prime is 30869787077. The next prime is 30869787233. The reversal of 30869787139 is 93178796803.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30869787139 - 2⁹ = 30869786627 is a prime.

It is not a weakly prime, because it can be changed into another prime (30869787239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15434893569 + 15434893570.

It is an arithmetic number, because the mean of its divisors is an integer number (15434893570).

Almost surely, 2^30869787139 is an apocalyptic number.

30869787139 is a deficient number, since it is larger than the sum of its proper divisors (1).

30869787139 is an equidigital number, since it uses as much as digits as its factorization.

30869787139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 30869787139 in words is "thirty billion, eight hundred sixty-nine million, seven hundred eighty-seven thousand, one hundred thirty-nine".