401387524823 has 4 divisors (see below), whose sum is σ = 401448173160. Its totient is φ = 401326876488.

The previous prime is 401387524787. The next prime is 401387524831. The reversal of 401387524823 is 328425783104.

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 401387524823 - 2³² = 397092557527 is a prime.

It is a super-2 number, since 2×401387524823² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401387520823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30314240 + ... + 30327477.

It is an arithmetic number, because the mean of its divisors is an integer number (100362043290).

Almost surely, 2^401387524823 is an apocalyptic number.

401387524823 is a deficient number, since it is larger than the sum of its proper divisors (60648337).

401387524823 is an equidigital number, since it uses as much as digits as its factorization.

401387524823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60648336.

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 401387524823 in words is "four hundred one billion, three hundred eighty-seven million, five hundred twenty-four thousand, eight hundred twenty-three".