400136301056 has 20 divisors (see below), whose sum is σ = 799491086922. Its totient is φ = 200068150272.

The previous prime is 400136301049. The next prime is 400136301083. The reversal of 400136301056 is 650103631004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 349233721600 + 50902579456 = 590960^2 + 225616^2 .

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 as a sum of consecutive naturals, namely, 390757595 + ... + 390758618.

Almost surely, 2^400136301056 is an apocalyptic number.

It is an amenable number.

400136301056 is a deficient number, since it is larger than the sum of its proper divisors (399354785866).

400136301056 is an frugal number, since it uses more digits than its factorization.

400136301056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781516231 (or 781516215 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 400136301056 in words is "four hundred billion, one hundred thirty-six million, three hundred one thousand, fifty-six".