2651815260 has 72 divisors (see below), whose sum is σ = 8341774896. Its totient is φ = 707149440.

The previous prime is 2651815249. The next prime is 2651815267. The reversal of 2651815260 is 625181562.

2651815260 is a `hidden beast` number, since 2 + 6 + 51 + 81 + 526 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651815267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267961 + ... + 277680.

Almost surely, 2^2651815260 is an apocalyptic number.

2651815260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2651815260 is an abundant number, since it is smaller than the sum of its proper divisors (5689959636).

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

2651815260 is a wasteful number, since it uses less digits than its factorization.

2651815260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545665 (or 545651 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 2651815260 is about 51495.7790503261. The cubic root of 2651815260 is about 1384.1434072111.

The spelling of 2651815260 in words is "two billion, six hundred fifty-one million, eight hundred fifteen thousand, two hundred sixty".