151631732261 has 16 divisors (see below), whose sum is σ = 154439019264. Its totient is φ = 148841155584.

The previous prime is 151631732249. The next prime is 151631732269. The reversal of 151631732261 is 162237136151.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151631732261 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 (151631732269) 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, 55889441 + ... + 55892153.

It is an arithmetic number, because the mean of its divisors is an integer number (9652438704).

Almost surely, 2^151631732261 is an apocalyptic number.

It is an amenable number.

151631732261 is a deficient number, since it is larger than the sum of its proper divisors (2807287003).

151631732261 is a wasteful number, since it uses less digits than its factorization.

151631732261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420.

The product of its digits is 45360, while the sum is 38.

The spelling of 151631732261 in words is "one hundred fifty-one billion, six hundred thirty-one million, seven hundred thirty-two thousand, two hundred sixty-one".