151565655561 has 16 divisors (see below), whose sum is σ = 205011565440. Its totient is φ = 99583862400.

The previous prime is 151565655559. The next prime is 151565655643. The reversal of 151565655561 is 165556565151.

It is not a de Polignac number, because 151565655561 - 2¹ = 151565655559 is a prime.

It is a super-3 number, since 3×151565655561³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (151565655551) 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, 26511 + ... + 551211.

It is an arithmetic number, because the mean of its divisors is an integer number (12813222840).

Almost surely, 2^151565655561 is an apocalyptic number.

It is an amenable number.

151565655561 is a deficient number, since it is larger than the sum of its proper divisors (53445909879).

151565655561 is a wasteful number, since it uses less digits than its factorization.

151565655561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526096.

The product of its digits is 3375000, while the sum is 51.

The spelling of 151565655561 in words is "one hundred fifty-one billion, five hundred sixty-five million, six hundred fifty-five thousand, five hundred sixty-one".