151781565139 has 2 divisors, whose sum is σ = 151781565140. Its totient is φ = 151781565138.

The previous prime is 151781565127. The next prime is 151781565197. The reversal of 151781565139 is 931565187151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151781565139 is a prime.

It is not a weakly prime, because it can be changed into another prime (151781563139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75890782569 + 75890782570.

It is an arithmetic number, because the mean of its divisors is an integer number (75890782570).

Almost surely, 2^151781565139 is an apocalyptic number.

151781565139 is a deficient number, since it is larger than the sum of its proper divisors (1).

151781565139 is an equidigital number, since it uses as much as digits as its factorization.

151781565139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 52.

The spelling of 151781565139 in words is "one hundred fifty-one billion, seven hundred eighty-one million, five hundred sixty-five thousand, one hundred thirty-nine".