45420536440 has 32 divisors (see below), whose sum is σ = 102234203280. Its totient is φ = 18161459712.

The previous prime is 45420536419. The next prime is 45420536467. The reversal of 45420536440 is 4463502454.

It is a self number, because there is not a number n which added to its sum of digits gives 45420536440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101457 + ... + 318016.

Almost surely, 2^45420536440 is an apocalyptic number.

45420536440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45420536440 is an abundant number, since it is smaller than the sum of its proper divisors (56813666840).

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

45420536440 is a wasteful number, since it uses less digits than its factorization.

45420536440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422191 (or 422187 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 45420536440 in words is "forty-five billion, four hundred twenty million, five hundred thirty-six thousand, four hundred forty".