16503797058478 has 4 divisors (see below), whose sum is σ = 24755695587720. Its totient is φ = 8251898529238.

The previous prime is 16503797058473. The next prime is 16503797058499. The reversal of 16503797058478 is 87485079730561.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16503797058473) 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 as a sum of consecutive naturals, namely, 4125949264618 + ... + 4125949264621.

It is an arithmetic number, because the mean of its divisors is an integer number (6188923896930).

Almost surely, 2^{16503797058478} is an apocalyptic number.

16503797058478 is a deficient number, since it is larger than the sum of its proper divisors (8251898529242).

16503797058478 is an equidigital number, since it uses as much as digits as its factorization.

16503797058478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8251898529241.

The product of its (nonzero) digits is 355622400, while the sum is 70.

The spelling of 16503797058478 in words is "sixteen trillion, five hundred three billion, seven hundred ninety-seven million, fifty-eight thousand, four hundred seventy-eight".