161402447403 has 12 divisors (see below), whose sum is σ = 233374050000. Its totient is φ = 107492163216.

The previous prime is 161402447383. The next prime is 161402447411. The reversal of 161402447403 is 304744204161.

161402447403 is a `hidden beast` number, since 1 + 6 + 1 + 4 + 0 + 244 + 7 + 403 = 666.

161402447403 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-161402447403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161402447413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9113028 + ... + 9130721.

It is an arithmetic number, because the mean of its divisors is an integer number (19447837500).

Almost surely, 2^161402447403 is an apocalyptic number.

161402447403 is a deficient number, since it is larger than the sum of its proper divisors (71971602597).

161402447403 is a wasteful number, since it uses less digits than its factorization.

161402447403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18244738 (or 18244735 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The spelling of 161402447403 in words is "one hundred sixty-one billion, four hundred two million, four hundred forty-seven thousand, four hundred three".