151166015561 has 4 divisors (see below), whose sum is σ = 164908380624. Its totient is φ = 137423650500.

The previous prime is 151166015531. The next prime is 151166015597. The reversal of 151166015561 is 165510661151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151166015561 - 2²² = 151161821257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151166015531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6871182515 + ... + 6871182536.

It is an arithmetic number, because the mean of its divisors is an integer number (41227095156).

Almost surely, 2^151166015561 is an apocalyptic number.

151166015561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

151166015561 is a deficient number, since it is larger than the sum of its proper divisors (13742365063).

151166015561 is a wasteful number, since it uses less digits than its factorization.

151166015561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13742365062.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 151166015561 in words is "one hundred fifty-one billion, one hundred sixty-six million, fifteen thousand, five hundred sixty-one".