400711896881 has 4 divisors (see below), whose sum is σ = 400727555172. Its totient is φ = 400696238592.

The previous prime is 400711896863. The next prime is 400711896883. The reversal of 400711896881 is 188698117004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143095758400 + 257616138481 = 378280^2 + 507559^2 .

It is a cyclic number.

It is not a de Polignac number, because 400711896881 - 2¹⁴ = 400711880497 is a prime.

It is a super-2 number, since 2×400711896881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400711896883) 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 3 ways as a sum of consecutive naturals, for example, 7790696 + ... + 7841961.

It is an arithmetic number, because the mean of its divisors is an integer number (100181888793).

Almost surely, 2^400711896881 is an apocalyptic number.

It is an amenable number.

400711896881 is a deficient number, since it is larger than the sum of its proper divisors (15658291).

400711896881 is a wasteful number, since it uses less digits than its factorization.

400711896881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15658290.

The product of its (nonzero) digits is 774144, while the sum is 53.

The spelling of 400711896881 in words is "four hundred billion, seven hundred eleven million, eight hundred ninety-six thousand, eight hundred eighty-one".