44405652640 has 48 divisors (see below), whose sum is σ = 107140465152. Its totient is φ = 17384337664.

The previous prime is 44405652637. The next prime is 44405652661. The reversal of 44405652640 is 4625650444.

It is a happy number.

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 = 44405652593 and 44405652602.

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, 2944984 + ... + 2960023.

It is an arithmetic number, because the mean of its divisors is an integer number (2232093024).

Almost surely, 2^44405652640 is an apocalyptic number.

44405652640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44405652640 is an abundant number, since it is smaller than the sum of its proper divisors (62734812512).

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

44405652640 is a wasteful number, since it uses less digits than its factorization.

44405652640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5905069 (or 5905061 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 44405652640 in words is "forty-four billion, four hundred five million, six hundred fifty-two thousand, six hundred forty".