151665016601661 has 8 divisors (see below), whose sum is σ = 202220263171680. Its totient is φ = 101109890549712.

The previous prime is 151665016601647. The next prime is 151665016601717. The reversal of 151665016601661 is 166106610566151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 151665016601661 - 2⁵ = 151665016601629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151665016601261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27151090 + ... + 32256963.

It is an arithmetic number, because the mean of its divisors is an integer number (25277532896460).

Almost surely, 2^{151665016601661} is an apocalyptic number.

It is an amenable number.

151665016601661 is a deficient number, since it is larger than the sum of its proper divisors (50555246570019).

151665016601661 is an equidigital number, since it uses as much as digits as its factorization.

151665016601661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60259035.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The spelling of 151665016601661 in words is "one hundred fifty-one trillion, six hundred sixty-five billion, sixteen million, six hundred one thousand, six hundred sixty-one".