2015642601 has 24 divisors (see below), whose sum is σ = 3328865280. Its totient is φ = 1151292096.

The previous prime is 2015642597. The next prime is 2015642609. The reversal of 2015642601 is 1062465102.

2015642601 is a `hidden beast` number, since 2 + 0 + 1 + 56 + 4 + 2 + 601 = 666.

It is not a de Polignac number, because 2015642601 - 2² = 2015642597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2015642609) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175821 + ... + 186933.

It is an arithmetic number, because the mean of its divisors is an integer number (138702720).

Almost surely, 2^2015642601 is an apocalyptic number.

2015642601 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2015642601 is a deficient number, since it is larger than the sum of its proper divisors (1313222679).

2015642601 is a wasteful number, since it uses less digits than its factorization.

2015642601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14005 (or 14002 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2015642601 is about 44895.9085106873. The cubic root of 2015642601 is about 1263.1972636444.

The spelling of 2015642601 in words is "two billion, fifteen million, six hundred forty-two thousand, six hundred one".