400152122444 has 24 divisors (see below), whose sum is σ = 706043495808. Its totient is φ = 198428167040.

The previous prime is 400152122443. The next prime is 400152122519. The reversal of 400152122444 is 444221251004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400152122443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237317 + ... + 925539.

It is an arithmetic number, because the mean of its divisors is an integer number (29418478992).

Almost surely, 2^400152122444 is an apocalyptic number.

It is an amenable number.

400152122444 is a deficient number, since it is larger than the sum of its proper divisors (305891373364).

400152122444 is a wasteful number, since it uses less digits than its factorization.

400152122444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689425 (or 689423 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 400152122444 its reverse (444221251004), we get a palindrome (844373373448).

The spelling of 400152122444 in words is "four hundred billion, one hundred fifty-two million, one hundred twenty-two thousand, four hundred forty-four".