2654512640 has 240 divisors, whose sum is σ = 7167759984. Its totient is φ = 937082880.

The previous prime is 2654512633. The next prime is 2654512649. The reversal of 2654512640 is 462154562.

It is a self number, because there is not a number n which added to its sum of digits gives 2654512640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2654512649) 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, 31982039 + ... + 31982121.

Almost surely, 2^2654512640 is an apocalyptic number.

2654512640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2654512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3583879992).

2654512640 is an abundant number, since it is smaller than the sum of its proper divisors (4513247344).

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

2654512640 is an equidigital number, since it uses as much as digits as its factorization.

2654512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 2654512640 is about 51521.9626955340. The cubic root of 2654512640 is about 1384.6125569806.

The spelling of 2654512640 in words is "two billion, six hundred fifty-four million, five hundred twelve thousand, six hundred forty".