404145642516 has 48 divisors (see below), whose sum is σ = 1175696417280. Its totient is φ = 104972893920.

The previous prime is 404145642497. The next prime is 404145642517. The reversal of 404145642516 is 615246541404.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404145642517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218692606 + ... + 218694453.

It is an arithmetic number, because the mean of its divisors is an integer number (24493675360).

Almost surely, 2^404145642516 is an apocalyptic number.

It is an amenable number.

404145642516 is an abundant number, since it is smaller than the sum of its proper divisors (771550774764).

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

404145642516 is a wasteful number, since it uses less digits than its factorization.

404145642516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437387084 (or 437387082 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 404145642516 in words is "four hundred four billion, one hundred forty-five million, six hundred forty-two thousand, five hundred sixteen".