400452513425544 has 32 divisors (see below), whose sum is σ = 1001131873020000. Its totient is φ = 133484092547712.

The previous prime is 400452513425543. The next prime is 400452513425567. The reversal of 400452513425544 is 445524315254004.

It is a junction number, because it is equal to n+sod(n) for n = 400452513425493 and 400452513425502.

It is not an unprimeable number, because it can be changed into a prime (400452513425543) 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, 48592167 + ... + 56232585.

It is an arithmetic number, because the mean of its divisors is an integer number (31285371031875).

Almost surely, 2^{400452513425544} is an apocalyptic number.

It is an amenable number.

400452513425544 is an abundant number, since it is smaller than the sum of its proper divisors (600679359594456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400452513425544 is a wasteful number, since it uses less digits than its factorization.

400452513425544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9824277 (or 9824273 counting only the distinct ones).

The product of its (nonzero) digits is 7680000, while the sum is 48.

Adding to 400452513425544 its reverse (445524315254004), we get a palindrome (845976828679548).

The spelling of 400452513425544 in words is "four hundred trillion, four hundred fifty-two billion, five hundred thirteen million, four hundred twenty-five thousand, five hundred forty-four".