400231456641 has 16 divisors (see below), whose sum is σ = 593273801920. Its totient is φ = 266668731360.

The previous prime is 400231456613. The next prime is 400231456657. The reversal of 400231456641 is 146654132004.

400231456641 is a `hidden beast` number, since 4 + 0 + 0 + 2 + 3 + 1 + 4 + 5 + 6 + 641 = 666.

It is not a de Polignac number, because 400231456641 - 2⁵ = 400231456609 is a prime.

It is a super-3 number, since 3×400231456641³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400231456596 and 400231456605.

It is not an unprimeable number, because it can be changed into a prime (400231456661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4180675 + ... + 4275336.

It is an arithmetic number, because the mean of its divisors is an integer number (37079612620).

Almost surely, 2^400231456641 is an apocalyptic number.

It is an amenable number.

400231456641 is a deficient number, since it is larger than the sum of its proper divisors (193042345279).

400231456641 is a wasteful number, since it uses less digits than its factorization.

400231456641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8457773 (or 8457767 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 400231456641 its reverse (146654132004), we get a palindrome (546885588645).

The spelling of 400231456641 in words is "four hundred billion, two hundred thirty-one million, four hundred fifty-six thousand, six hundred forty-one".