149317614791 has 2 divisors, whose sum is σ = 149317614792. Its totient is φ = 149317614790.

The previous prime is 149317614779. The next prime is 149317614841. The reversal of 149317614791 is 197416713941.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149317614791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149317614701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74658807395 + 74658807396.

It is an arithmetic number, because the mean of its divisors is an integer number (74658807396).

Almost surely, 2^149317614791 is an apocalyptic number.

149317614791 is a deficient number, since it is larger than the sum of its proper divisors (1).

149317614791 is an equidigital number, since it uses as much as digits as its factorization.

149317614791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 53.

The spelling of 149317614791 in words is "one hundred forty-nine billion, three hundred seventeen million, six hundred fourteen thousand, seven hundred ninety-one".