139751391851 has 2 divisors, whose sum is σ = 139751391852. Its totient is φ = 139751391850.

The previous prime is 139751391817. The next prime is 139751391859. The reversal of 139751391851 is 158193157931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139751391851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139751391793 and 139751391802.

It is not a weakly prime, because it can be changed into another prime (139751391859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69875695925 + 69875695926.

It is an arithmetic number, because the mean of its divisors is an integer number (69875695926).

Almost surely, 2^139751391851 is an apocalyptic number.

139751391851 is a deficient number, since it is larger than the sum of its proper divisors (1).

139751391851 is an equidigital number, since it uses as much as digits as its factorization.

139751391851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 53.

The spelling of 139751391851 in words is "one hundred thirty-nine billion, seven hundred fifty-one million, three hundred ninety-one thousand, eight hundred fifty-one".