2642377815 has 64 divisors (see below), whose sum is σ = 5856721920. Its totient is φ = 1098126720.

The previous prime is 2642377811. The next prime is 2642377853. The reversal of 2642377815 is 5187732462.

2642377815 is a `hidden beast` number, since 264 + 2 + 377 + 8 + 15 = 666.

It is not a de Polignac number, because 2642377815 - 2² = 2642377811 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642377811) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 116704 + ... + 137493.

It is an arithmetic number, because the mean of its divisors is an integer number (91511280).

Almost surely, 2^2642377815 is an apocalyptic number.

2642377815 is an abundant number, since it is smaller than the sum of its proper divisors (3214344105).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2642377815 is a wasteful number, since it uses less digits than its factorization.

2642377815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254229 (or 254223 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 2642377815 is about 51404.0641875718. The cubic root of 2642377815 is about 1382.4994636083.

The spelling of 2642377815 in words is "two billion, six hundred forty-two million, three hundred seventy-seven thousand, eight hundred fifteen".