151555601665 has 16 divisors (see below), whose sum is σ = 195865721856. Its totient is φ = 111912696000.

The previous prime is 151555601653. The next prime is 151555601683. The reversal of 151555601665 is 566106555151.

It is a happy number.

It is not a de Polignac number, because 151555601665 - 2¹¹ = 151555599617 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1817640 + ... + 1899190.

It is an arithmetic number, because the mean of its divisors is an integer number (12241607616).

Almost surely, 2^151555601665 is an apocalyptic number.

It is an amenable number.

151555601665 is a deficient number, since it is larger than the sum of its proper divisors (44310120191).

151555601665 is a wasteful number, since it uses less digits than its factorization.

151555601665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110160.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 151555601665 in words is "one hundred fifty-one billion, five hundred fifty-five million, six hundred one thousand, six hundred sixty-five".