400344516254 has 32 divisors (see below), whose sum is σ = 631861896960. Its totient is φ = 189976550400.

The previous prime is 400344516227. The next prime is 400344516287. The reversal of 400344516254 is 452615443004.

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, 7798382 + ... + 7849550.

It is an arithmetic number, because the mean of its divisors is an integer number (19745684280).

Almost surely, 2^400344516254 is an apocalyptic number.

400344516254 is a deficient number, since it is larger than the sum of its proper divisors (231517380706).

400344516254 is a wasteful number, since it uses less digits than its factorization.

400344516254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53636.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 400344516254 its reverse (452615443004), we get a palindrome (852959959258).

The spelling of 400344516254 in words is "four hundred billion, three hundred forty-four million, five hundred sixteen thousand, two hundred fifty-four".