155265143665 has 32 divisors (see below), whose sum is σ = 201813825024. Its totient is φ = 114226022400.

The previous prime is 155265143653. The next prime is 155265143687. The reversal of 155265143665 is 566341562551.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-155265143665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2368662 + ... + 2433328.

It is an arithmetic number, because the mean of its divisors is an integer number (6306682032).

Almost surely, 2^155265143665 is an apocalyptic number.

It is an amenable number.

155265143665 is a deficient number, since it is larger than the sum of its proper divisors (46548681359).

155265143665 is a wasteful number, since it uses less digits than its factorization.

155265143665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65337.

The product of its digits is 3240000, while the sum is 49.

The spelling of 155265143665 in words is "one hundred fifty-five billion, two hundred sixty-five million, one hundred forty-three thousand, six hundred sixty-five".