42403646544 has 80 divisors (see below), whose sum is σ = 125214069120. Its totient is φ = 12113164800.

The previous prime is 42403646539. The next prime is 42403646557. The reversal of 42403646544 is 44564630424.

It is a happy number.

42403646544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 42403646496 and 42403646505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3498094 + ... + 3510194.

It is an arithmetic number, because the mean of its divisors is an integer number (1565175864).

Almost surely, 2^42403646544 is an apocalyptic number.

It is an amenable number.

42403646544 is an abundant number, since it is smaller than the sum of its proper divisors (82810422576).

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

42403646544 is a wasteful number, since it uses less digits than its factorization.

42403646544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22548 (or 22542 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 42403646544 in words is "forty-two billion, four hundred three million, six hundred forty-six thousand, five hundred forty-four".