402343435646 has 16 divisors (see below), whose sum is σ = 624638520000. Its totient is φ = 194137540128.

The previous prime is 402343435639. The next prime is 402343435651. The reversal of 402343435646 is 646534343204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402343435597 and 402343435606.

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, 1619165 + ... + 1851048.

It is an arithmetic number, because the mean of its divisors is an integer number (39039907500).

Almost surely, 2^402343435646 is an apocalyptic number.

402343435646 is a deficient number, since it is larger than the sum of its proper divisors (222295084354).

402343435646 is a wasteful number, since it uses less digits than its factorization.

402343435646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472243.

The product of its (nonzero) digits is 2488320, while the sum is 44.

The spelling of 402343435646 in words is "four hundred two billion, three hundred forty-three million, four hundred thirty-five thousand, six hundred forty-six".