2655187440 has 80 divisors (see below), whose sum is σ = 8236127616. Its totient is φ = 707616000.

The previous prime is 2655187427. The next prime is 2655187453. The reversal of 2655187440 is 447815562.

It is a happy number.

2655187440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2655187427) and next prime (2655187453).

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2655187392 and 2655187401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653415 + ... + 657465.

Almost surely, 2^2655187440 is an apocalyptic number.

2655187440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2655187440 is an abundant number, since it is smaller than the sum of its proper divisors (5580940176).

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

2655187440 is a wasteful number, since it uses less digits than its factorization.

2655187440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798 (or 6792 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 2655187440 is about 51528.5109429721. The cubic root of 2655187440 is about 1384.7298738568.

The spelling of 2655187440 in words is "two billion, six hundred fifty-five million, one hundred eighty-seven thousand, four hundred forty".