400767195161 has 2 divisors, whose sum is σ = 400767195162. Its totient is φ = 400767195160.

The previous prime is 400767195133. The next prime is 400767195173. The reversal of 400767195161 is 161591767004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368157697600 + 32609497561 = 606760^2 + 180581^2 .

It is a cyclic number.

It is not a de Polignac number, because 400767195161 - 2²² = 400763000857 is a prime.

It is a super-2 number, since 2×400767195161² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400767191161) 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 as a sum of consecutive naturals, namely, 200383597580 + 200383597581.

It is an arithmetic number, because the mean of its divisors is an integer number (200383597581).

Almost surely, 2^400767195161 is an apocalyptic number.

It is an amenable number.

400767195161 is a deficient number, since it is larger than the sum of its proper divisors (1).

400767195161 is an equidigital number, since it uses as much as digits as its factorization.

400767195161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 47.

The spelling of 400767195161 in words is "four hundred billion, seven hundred sixty-seven million, one hundred ninety-five thousand, one hundred sixty-one".