400260187472 has 20 divisors (see below), whose sum is σ = 777726198900. Its totient is φ = 199556652288.

The previous prime is 400260187433. The next prime is 400260187501. The reversal of 400260187472 is 274781062004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 267388273216 + 132871914256 = 517096^2 + 364516^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35834333 + ... + 35845500.

It is an arithmetic number, because the mean of its divisors is an integer number (38886309945).

Almost surely, 2^400260187472 is an apocalyptic number.

It is an amenable number.

400260187472 is a deficient number, since it is larger than the sum of its proper divisors (377466011428).

400260187472 is a wasteful number, since it uses less digits than its factorization.

400260187472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71680190 (or 71680184 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The spelling of 400260187472 in words is "four hundred billion, two hundred sixty million, one hundred eighty-seven thousand, four hundred seventy-two".