401871649095408 has 20 divisors (see below), whose sum is σ = 1038168426829928. Its totient is φ = 133957216365120.

The previous prime is 401871649095379. The next prime is 401871649095529. The reversal of 401871649095408 is 804590946178104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4186163011363 + ... + 4186163011458.

Almost surely, 2^{401871649095408} is an apocalyptic number.

401871649095408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

401871649095408 is an abundant number, since it is smaller than the sum of its proper divisors (636296777734520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401871649095408 is a wasteful number, since it uses less digits than its factorization.

401871649095408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8372326022832 (or 8372326022826 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 401871649095408 in words is "four hundred one trillion, eight hundred seventy-one billion, six hundred forty-nine million, ninety-five thousand, four hundred eight".