16729502458 has 4 divisors (see below), whose sum is σ = 25094253690. Its totient is φ = 8364751228.

The previous prime is 16729502453. The next prime is 16729502459. The reversal of 16729502458 is 85420592761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85420592761 = 7 ⋅12202941823.

It can be written as a sum of positive squares in only one way, i.e., 16505311729 + 224190729 = 128473^2 + 14973^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16729502453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4182375613 + ... + 4182375616.

Almost surely, 2^16729502458 is an apocalyptic number.

16729502458 is a deficient number, since it is larger than the sum of its proper divisors (8364751232).

16729502458 is an equidigital number, since it uses as much as digits as its factorization.

16729502458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364751231.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 16729502458 in words is "sixteen billion, seven hundred twenty-nine million, five hundred two thousand, four hundred fifty-eight".