401791641867 has 32 divisors (see below), whose sum is σ = 742125980160. Its totient is φ = 208722929760.

The previous prime is 401791641857. The next prime is 401791641869. The reversal of 401791641867 is 768146197104.

401791641867 is a `hidden beast` number, since 40 + 179 + 16 + 418 + 6 + 7 = 666.

It is not a de Polignac number, because 401791641867 - 2⁴ = 401791641851 is a prime.

It is a super-2 number, since 2×401791641867² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401791641869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96628908 + ... + 96633065.

It is an arithmetic number, because the mean of its divisors is an integer number (23191436880).

Almost surely, 2^401791641867 is an apocalyptic number.

401791641867 is a deficient number, since it is larger than the sum of its proper divisors (340334338293).

401791641867 is a wasteful number, since it uses less digits than its factorization.

401791641867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193262000 (or 193261994 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 401791641867 in words is "four hundred one billion, seven hundred ninety-one million, six hundred forty-one thousand, eight hundred sixty-seven".