130921538807879 has 2 divisors, whose sum is σ = 130921538807880. Its totient is φ = 130921538807878.

The previous prime is 130921538807743. The next prime is 130921538807893. The reversal of 130921538807879 is 978708835129031.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130921538807879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130921538107879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65460769403939 + 65460769403940.

It is an arithmetic number, because the mean of its divisors is an integer number (65460769403940).

Almost surely, 2^{130921538807879} is an apocalyptic number.

130921538807879 is a deficient number, since it is larger than the sum of its proper divisors (1).

130921538807879 is an equidigital number, since it uses as much as digits as its factorization.

130921538807879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 182891520, while the sum is 71.

The spelling of 130921538807879 in words is "one hundred thirty trillion, nine hundred twenty-one billion, five hundred thirty-eight million, eight hundred seven thousand, eight hundred seventy-nine".