151611665506 has 16 divisors (see below), whose sum is σ = 260014927680. Its totient is φ = 64949124240.

The previous prime is 151611665501. The next prime is 151611665519. The reversal of 151611665506 is 605566116151.

It is not an unprimeable number, because it can be changed into a prime (151611665501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240796 + ... + 2307463.

It is an arithmetic number, because the mean of its divisors is an integer number (16250932980).

Almost surely, 2^151611665506 is an apocalyptic number.

151611665506 is a deficient number, since it is larger than the sum of its proper divisors (108403262174).

151611665506 is a wasteful number, since it uses less digits than its factorization.

151611665506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550649.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 151611665506 in words is "one hundred fifty-one billion, six hundred eleven million, six hundred sixty-five thousand, five hundred six".