401894695405 has 16 divisors (see below), whose sum is σ = 552731272704. Its totient is φ = 274804231680.

The previous prime is 401894695381. The next prime is 401894695483. The reversal of 401894695405 is 504596498104.

It is not a de Polignac number, because 401894695405 - 2⁹ = 401894694893 is a prime.

It is a super-2 number, since 2×401894695405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16252101 + ... + 16276810.

It is an arithmetic number, because the mean of its divisors is an integer number (34545704544).

Almost surely, 2^401894695405 is an apocalyptic number.

It is an amenable number.

401894695405 is a deficient number, since it is larger than the sum of its proper divisors (150836577299).

401894695405 is a wasteful number, since it uses less digits than its factorization.

401894695405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32529276.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 401894695405 in words is "four hundred one billion, eight hundred ninety-four million, six hundred ninety-five thousand, four hundred five".