2551660000 has 60 divisors (see below), whose sum is σ = 6277515552. Its totient is φ = 1020656000.

The previous prime is 2551659991. The next prime is 2551660009. The reversal of 2551660000 is 661552.

It is an interprime number because it is at equal distance from previous prime (2551659991) and next prime (2551660009).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551660009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 43792 + ... + 83791.

Almost surely, 2^2551660000 is an apocalyptic number.

2551660000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2551660000 is an abundant number, since it is smaller than the sum of its proper divisors (3725855552).

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

2551660000 is an equidigital number, since it uses as much as digits as its factorization.

2551660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127613 (or 127590 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2551660000 is about 50513.9584669426. The cubic root of 2551660000 is about 1366.4935996063.

The spelling of 2551660000 in words is "two billion, five hundred fifty-one million, six hundred sixty thousand".