163430378433 has 20 divisors (see below), whose sum is σ = 279013416000. Its totient is φ = 93388787352.

The previous prime is 163430378413. The next prime is 163430378479. The reversal of 163430378433 is 334873034361.

163430378433 is a `hidden beast` number, since 1 + 634 + 3 + 0 + 3 + 7 + 8 + 4 + 3 + 3 = 666.

It is not a de Polignac number, because 163430378433 - 2¹³ = 163430370241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163430378413) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 144117933 + ... + 144119066.

It is an arithmetic number, because the mean of its divisors is an integer number (13950670800).

Almost surely, 2^163430378433 is an apocalyptic number.

It is an amenable number.

163430378433 is a deficient number, since it is larger than the sum of its proper divisors (115583037567).

163430378433 is an equidigital number, since it uses as much as digits as its factorization.

163430378433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288237018 (or 288237009 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 45.

The spelling of 163430378433 in words is "one hundred sixty-three billion, four hundred thirty million, three hundred seventy-eight thousand, four hundred thirty-three".