400961329315 has 8 divisors (see below), whose sum is σ = 497745098640. Its totient is φ = 309708061152.

The previous prime is 400961329291. The next prime is 400961329319. The reversal of 400961329315 is 513923169004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400961329315 - 2¹¹ = 400961327267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400961329319) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1382625129 + ... + 1382625418.

It is an arithmetic number, because the mean of its divisors is an integer number (62218137330).

Almost surely, 2^400961329315 is an apocalyptic number.

400961329315 is a deficient number, since it is larger than the sum of its proper divisors (96783769325).

400961329315 is a wasteful number, since it uses less digits than its factorization.

400961329315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765250581.

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 400961329315 in words is "four hundred billion, nine hundred sixty-one million, three hundred twenty-nine thousand, three hundred fifteen".