400255134646 has 8 divisors (see below), whose sum is σ = 600392330280. Its totient is φ = 200124357888.

The previous prime is 400255134619. The next prime is 400255134701. The reversal of 400255134646 is 646431552004.

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

It is a junction number, because it is equal to n+sod(n) for n = 400255134599 and 400255134608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445676 + ... + 1700143.

It is an arithmetic number, because the mean of its divisors is an integer number (75049041285).

Almost surely, 2^400255134646 is an apocalyptic number.

400255134646 is a deficient number, since it is larger than the sum of its proper divisors (200137195634).

400255134646 is a wasteful number, since it uses less digits than its factorization.

400255134646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209438.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 400255134646 in words is "four hundred billion, two hundred fifty-five million, one hundred thirty-four thousand, six hundred forty-six".