16801072634 has 4 divisors (see below), whose sum is σ = 25201608954. Its totient is φ = 8400536316.

The previous prime is 16801072583. The next prime is 16801072711. The reversal of 16801072634 is 43627010861.

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

It can be written as a sum of positive squares in only one way, i.e., 15431850625 + 1369222009 = 124225^2 + 37003^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4200268157 + ... + 4200268160.

Almost surely, 2^16801072634 is an apocalyptic number.

16801072634 is a deficient number, since it is larger than the sum of its proper divisors (8400536320).

16801072634 is an equidigital number, since it uses as much as digits as its factorization.

16801072634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8400536319.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 16801072634 in words is "sixteen billion, eight hundred one million, seventy-two thousand, six hundred thirty-four".