400401104612553 has 24 divisors (see below), whose sum is σ = 631055689370496. Its totient is φ = 242620945576800.

The previous prime is 400401104612549. The next prime is 400401104612633. The reversal of 400401104612553 is 355216401104004.

400401104612553 is a `hidden beast` number, since 4 + 0 + 0 + 40 + 1 + 1 + 0 + 4 + 61 + 2 + 553 = 666.

It is not a de Polignac number, because 400401104612553 - 2² = 400401104612549 is a prime.

It is a super-2 number, since 2×400401104612553² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400401104612533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386067450 + ... + 387103187.

It is an arithmetic number, because the mean of its divisors is an integer number (26293987057104).

Almost surely, 2^{400401104612553} is an apocalyptic number.

It is an amenable number.

400401104612553 is a deficient number, since it is larger than the sum of its proper divisors (230654584757943).

400401104612553 is a wasteful number, since it uses less digits than its factorization.

400401104612553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773175885 (or 773175882 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 400401104612553 its reverse (355216401104004), we get a palindrome (755617505716557).

The spelling of 400401104612553 in words is "four hundred trillion, four hundred one billion, one hundred four million, six hundred twelve thousand, five hundred fifty-three".