6453880000 has 140 divisors (see below), whose sum is σ = 16946694072. Its totient is φ = 2429440000.

The previous prime is 6453879997. The next prime is 6453880009. The reversal of 6453880000 is 883546.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (6453880009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 675255 + ... + 684745.

Almost surely, 2^6453880000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6453880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8473347036).

6453880000 is an abundant number, since it is smaller than the sum of its proper divisors (10492814072).

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

6453880000 is an equidigital number, since it uses as much as digits as its factorization.

6453880000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9540 (or 9515 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 6453880000 is about 80336.0442142878. The cubic root of 6453880000 is about 1861.8311638360.

The spelling of 6453880000 in words is "six billion, four hundred fifty-three million, eight hundred eighty thousand".