151155516666531 has 16 divisors (see below), whose sum is σ = 217061068480256. Its totient is φ = 93011386768416.

The previous prime is 151155516666499. The next prime is 151155516666533. The reversal of 151155516666531 is 135666615551151.

It is not a de Polignac number, because 151155516666531 - 2⁵ = 151155516666499 is a prime.

It is a super-2 number, since 2×151155516666531² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (151155516666533) 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, 153517945 + ... + 154499418.

It is an arithmetic number, because the mean of its divisors is an integer number (13566316780016).

Almost surely, 2^{151155516666531} is an apocalyptic number.

151155516666531 is a deficient number, since it is larger than the sum of its proper divisors (65905551813725).

151155516666531 is a wasteful number, since it uses less digits than its factorization.

151155516666531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308029962.

The product of its digits is 12150000, while the sum is 57.

The spelling of 151155516666531 in words is "one hundred fifty-one trillion, one hundred fifty-five billion, five hundred sixteen million, six hundred sixty-six thousand, five hundred thirty-one".