403808780403 has 48 divisors (see below), whose sum is σ = 682063299840. Its totient is φ = 225444917952.

The previous prime is 403808780327. The next prime is 403808780423. The reversal of 403808780403 is 304087808304.

It is a happy number.

It is not a de Polignac number, because 403808780403 - 2¹⁸ = 403808518259 is a prime.

It is a super-2 number, since 2×403808780403² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (403808780423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 272625 + ... + 939117.

It is an arithmetic number, because the mean of its divisors is an integer number (14209652080).

Almost surely, 2^403808780403 is an apocalyptic number.

403808780403 is a deficient number, since it is larger than the sum of its proper divisors (278254519437).

403808780403 is a wasteful number, since it uses less digits than its factorization.

403808780403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666728 (or 666725 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 403808780403 in words is "four hundred three billion, eight hundred eight million, seven hundred eighty thousand, four hundred three".