403640338081 has 8 divisors (see below), whose sum is σ = 405208867520. Its totient is φ = 402074841168.

The previous prime is 403640338069. The next prime is 403640338093. The reversal of 403640338081 is 180833046304.

It is an interprime number because it is at equal distance from previous prime (403640338069) and next prime (403640338093).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 403640338081 - 2¹⁹ = 403639813793 is a prime.

It is a super-2 number, since 2×403640338081² (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 (403640338481) 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 7 ways as a sum of consecutive naturals, for example, 491226 + ... + 1024003.

It is an arithmetic number, because the mean of its divisors is an integer number (50651108440).

Almost surely, 2^403640338081 is an apocalyptic number.

It is an amenable number.

403640338081 is a deficient number, since it is larger than the sum of its proper divisors (1568529439).

403640338081 is a wasteful number, since it uses less digits than its factorization.

403640338081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516263.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 403640338081 in words is "four hundred three billion, six hundred forty million, three hundred thirty-eight thousand, eighty-one".