401632548139 has 4 divisors (see below), whose sum is σ = 402644217424. Its totient is φ = 400620878856.

The previous prime is 401632548041. The next prime is 401632548157. The reversal of 401632548139 is 931845236104.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 401632548139 - 2⁷ = 401632548011 is a prime.

It is a super-2 number, since 2×401632548139² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401632548839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505834047 + ... + 505834840.

It is an arithmetic number, because the mean of its divisors is an integer number (100661054356).

Almost surely, 2^401632548139 is an apocalyptic number.

401632548139 is a deficient number, since it is larger than the sum of its proper divisors (1011669285).

401632548139 is a wasteful number, since it uses less digits than its factorization.

401632548139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011669284.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 401632548139 in words is "four hundred one billion, six hundred thirty-two million, five hundred forty-eight thousand, one hundred thirty-nine".