401971599999 has 8 divisors (see below), whose sum is σ = 595513481520. Its totient is φ = 267981066648.

The previous prime is 401971599919. The next prime is 401971600039. The reversal of 401971599999 is 999995179104.

It is not a de Polignac number, because 401971599999 - 2⁷ = 401971599871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401971599919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7443918492 + ... + 7443918545.

It is an arithmetic number, because the mean of its divisors is an integer number (74439185190).

Almost surely, 2^401971599999 is an apocalyptic number.

401971599999 is a deficient number, since it is larger than the sum of its proper divisors (193541881521).

401971599999 is a wasteful number, since it uses less digits than its factorization.

401971599999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14887837046 (or 14887837040 counting only the distinct ones).

The product of its (nonzero) digits is 74401740, while the sum is 72.

The spelling of 401971599999 in words is "four hundred one billion, nine hundred seventy-one million, five hundred ninety-nine thousand, nine hundred ninety-nine".