16607989754 has 4 divisors (see below), whose sum is σ = 24911984634. Its totient is φ = 8303994876.

The previous prime is 16607989751. The next prime is 16607989763. The reversal of 16607989754 is 45798970661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45798970661 = 1783 ⋅25686467.

It can be written as a sum of positive squares in only one way, i.e., 10331706025 + 6276283729 = 101645^2 + 79223^2 .

It is not an unprimeable number, because it can be changed into a prime (16607989751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4151997437 + ... + 4151997440.

Almost surely, 2^16607989754 is an apocalyptic number.

16607989754 is a deficient number, since it is larger than the sum of its proper divisors (8303994880).

16607989754 is an equidigital number, since it uses as much as digits as its factorization.

16607989754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303994879.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 16607989754 in words is "sixteen billion, six hundred seven million, nine hundred eighty-nine thousand, seven hundred fifty-four".