401727864054891 has 16 divisors (see below), whose sum is σ = 585087365491200. Its totient is φ = 243156463233120.

The previous prime is 401727864054883. The next prime is 401727864054901. The reversal of 401727864054891 is 198450468727104.

It is not a de Polignac number, because 401727864054891 - 2³ = 401727864054883 is a prime.

It is a super-2 number, since 2×401727864054891² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401727864054991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7874212291 + ... + 7874263308.

It is an arithmetic number, because the mean of its divisors is an integer number (36567960343200).

Almost surely, 2^{401727864054891} is an apocalyptic number.

401727864054891 is a deficient number, since it is larger than the sum of its proper divisors (183359501436309).

401727864054891 is a wasteful number, since it uses less digits than its factorization.

401727864054891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15748476386.

The product of its (nonzero) digits is 108380160, while the sum is 66.

The spelling of 401727864054891 in words is "four hundred one trillion, seven hundred twenty-seven billion, eight hundred sixty-four million, fifty-four thousand, eight hundred ninety-one".