6455187040 has 96 divisors (see below), whose sum is σ = 15905804544. Its totient is φ = 2472837120.

The previous prime is 6455187029. The next prime is 6455187073. The reversal of 6455187040 is 407815546.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 6455186984 and 6455187002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474412 + ... + 487828.

It is an arithmetic number, because the mean of its divisors is an integer number (165685464).

Almost surely, 2^6455187040 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 6455187040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7952902272).

6455187040 is an abundant number, since it is smaller than the sum of its proper divisors (9450617504).

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

6455187040 is a wasteful number, since it uses less digits than its factorization.

6455187040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13560 (or 13552 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 6455187040 is about 80344.1786316843. The cubic root of 6455187040 is about 1861.9568413895.

The spelling of 6455187040 in words is "six billion, four hundred fifty-five million, one hundred eighty-seven thousand, forty".