620888824139 has 2 divisors, whose sum is σ = 620888824140. Its totient is φ = 620888824138.

The previous prime is 620888824103. The next prime is 620888824151. The reversal of 620888824139 is 931428888026.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620888824139 is a prime.

It is not a weakly prime, because it can be changed into another prime (620888824189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310444412069 + 310444412070.

It is an arithmetic number, because the mean of its divisors is an integer number (310444412070).

Almost surely, 2^620888824139 is an apocalyptic number.

620888824139 is a deficient number, since it is larger than the sum of its proper divisors (1).

620888824139 is an equidigital number, since it uses as much as digits as its factorization.

620888824139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10616832, while the sum is 59.

The spelling of 620888824139 in words is "six hundred twenty billion, eight hundred eighty-eight million, eight hundred twenty-four thousand, one hundred thirty-nine".