151506642991 has 16 divisors (see below), whose sum is σ = 165715833600. Its totient is φ = 137370441600.

The previous prime is 151506642961. The next prime is 151506643019. The reversal of 151506642991 is 199246605151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151506642991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151506642961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10141015 + ... + 10155943.

It is an arithmetic number, because the mean of its divisors is an integer number (10357239600).

Almost surely, 2^151506642991 is an apocalyptic number.

151506642991 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

151506642991 is a deficient number, since it is larger than the sum of its proper divisors (14209190609).

151506642991 is a wasteful number, since it uses less digits than its factorization.

151506642991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17310.

The product of its (nonzero) digits is 583200, while the sum is 49.

It can be divided in two parts, 151506 and 642991, that added together give a palindrome (794497).

The spelling of 151506642991 in words is "one hundred fifty-one billion, five hundred six million, six hundred forty-two thousand, nine hundred ninety-one".