403378678869 has 4 divisors (see below), whose sum is σ = 537838238496. Its totient is φ = 268919119244.

The previous prime is 403378678841. The next prime is 403378678943. The reversal of 403378678869 is 968876873304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 403378678869 - 2⁵ = 403378678837 is a prime.

It is a super-2 number, since 2×403378678869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403378678669) 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, 67229779809 + ... + 67229779814.

It is an arithmetic number, because the mean of its divisors is an integer number (134459559624).

Almost surely, 2^403378678869 is an apocalyptic number.

It is an amenable number.

403378678869 is a deficient number, since it is larger than the sum of its proper divisors (134459559627).

403378678869 is a wasteful number, since it uses less digits than its factorization.

403378678869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134459559626.

The product of its (nonzero) digits is 292626432, while the sum is 69.

The spelling of 403378678869 in words is "four hundred three billion, three hundred seventy-eight million, six hundred seventy-eight thousand, eight hundred sixty-nine".