2642155587 has 6 divisors (see below), whose sum is σ = 3816446972. Its totient is φ = 1761437052.

The previous prime is 2642155573. The next prime is 2642155603. The reversal of 2642155587 is 7855512462.

2642155587 is a `hidden beast` number, since 2 + 64 + 2 + 1 + 5 + 5 + 587 = 666.

It is not a de Polignac number, because 2642155587 - 2⁸ = 2642155331 is a prime.

It is a super-2 number, since 2×2642155587² = 13961972291830629138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2642165587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146786413 + ... + 146786430.

Almost surely, 2^2642155587 is an apocalyptic number.

2642155587 is a deficient number, since it is larger than the sum of its proper divisors (1174291385).

2642155587 is a wasteful number, since it uses less digits than its factorization.

2642155587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293572849 (or 293572846 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The square root of 2642155587 is about 51401.9025620648. The cubic root of 2642155587 is about 1382.4607057514.

The spelling of 2642155587 in words is "two billion, six hundred forty-two million, one hundred fifty-five thousand, five hundred eighty-seven".