455458643640 has 3456 divisors, whose sum is σ = 2319787641600. Its totient is φ = 76082872320.

The previous prime is 455458643617. The next prime is 455458643677. The reversal of 455458643640 is 46346854554.

455458643640 is a `hidden beast` number, since 4 + 5 + 54 + 586 + 4 + 3 + 6 + 4 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 863 ways as a sum of consecutive naturals, for example, 10592061459 + ... + 10592061501.

It is an arithmetic number, because the mean of its divisors is an integer number (671234850).

Almost surely, 2^455458643640 is an apocalyptic number.

455458643640 is a gapful number since it is divisible by the number (40) 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 455458643640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1159893820800).

455458643640 is an abundant number, since it is smaller than the sum of its proper divisors (1864328997960).

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

455458643640 is a wasteful number, since it uses less digits than its factorization.

455458643640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 27648000, while the sum is 54.

The spelling of 455458643640 in words is "four hundred fifty-five billion, four hundred fifty-eight million, six hundred forty-three thousand, six hundred forty".