402205040638 has 8 divisors (see below), whose sum is σ = 603341156232. Its totient is φ = 201091321896.

The previous prime is 402205040579. The next prime is 402205040647. The reversal of 402205040638 is 836040502204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5554245 + ... + 5626192.

It is an arithmetic number, because the mean of its divisors is an integer number (75417644529).

Almost surely, 2^402205040638 is an apocalyptic number.

402205040638 is a deficient number, since it is larger than the sum of its proper divisors (201136115594).

402205040638 is a wasteful number, since it uses less digits than its factorization.

402205040638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11198426.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 402205040638 in words is "four hundred two billion, two hundred five million, forty thousand, six hundred thirty-eight".