455545867840 has 448 divisors, whose sum is σ = 1313396757504. Its totient is φ = 147136315392.

The previous prime is 455545867823. The next prime is 455545867849. The reversal of 455545867840 is 48768545554.

It is a tau number, because it is divible by the number of its divisors (448).

It is not an unprimeable number, because it can be changed into a prime (455545867849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1644569782 + ... + 1644570058.

Almost surely, 2^455545867840 is an apocalyptic number.

455545867840 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 455545867840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656698378752).

455545867840 is an abundant number, since it is smaller than the sum of its proper divisors (857850889664).

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

455545867840 is a wasteful number, since it uses less digits than its factorization.

455545867840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 107520000, while the sum is 61.

The spelling of 455545867840 in words is "four hundred fifty-five billion, five hundred forty-five million, eight hundred sixty-seven thousand, eight hundred forty".