139351577987 has 2 divisors, whose sum is σ = 139351577988. Its totient is φ = 139351577986.

The previous prime is 139351577971. The next prime is 139351577993. The reversal of 139351577987 is 789775153931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139351577987 - 2⁴ = 139351577971 is a prime.

It is not a weakly prime, because it can be changed into another prime (139351577927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69675788993 + 69675788994.

It is an arithmetic number, because the mean of its divisors is an integer number (69675788994).

Almost surely, 2^139351577987 is an apocalyptic number.

139351577987 is a deficient number, since it is larger than the sum of its proper divisors (1).

139351577987 is an equidigital number, since it uses as much as digits as its factorization.

139351577987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50009400, while the sum is 65.

The spelling of 139351577987 in words is "one hundred thirty-nine billion, three hundred fifty-one million, five hundred seventy-seven thousand, nine hundred eighty-seven".