401394374205 has 64 divisors (see below), whose sum is σ = 742188441600. Its totient is φ = 183197963520.

The previous prime is 401394374159. The next prime is 401394374207. The reversal of 401394374205 is 502473493104.

It is a happy number.

It is not a de Polignac number, because 401394374205 - 2³⁶ = 332674897469 is a prime.

It is a super-2 number, since 2×401394374205² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401394374207) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 84436 + ... + 899954.

It is an arithmetic number, because the mean of its divisors is an integer number (11596694400).

Almost surely, 2^401394374205 is an apocalyptic number.

It is an amenable number.

401394374205 is a deficient number, since it is larger than the sum of its proper divisors (340794067395).

401394374205 is a wasteful number, since it uses less digits than its factorization.

401394374205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815714.

The product of its (nonzero) digits is 362880, while the sum is 42.

The spelling of 401394374205 in words is "four hundred one billion, three hundred ninety-four million, three hundred seventy-four thousand, two hundred five".