16633400451 has 8 divisors (see below), whose sum is σ = 23345123520. Its totient is φ = 10505305512.

The previous prime is 16633400401. The next prime is 16633400461. The reversal of 16633400451 is 15400433661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16633400451 - 2⁷ = 16633400323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16633400401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145906965 + ... + 145907078.

It is an arithmetic number, because the mean of its divisors is an integer number (2918140440).

Almost surely, 2^16633400451 is an apocalyptic number.

16633400451 is a deficient number, since it is larger than the sum of its proper divisors (6711723069).

16633400451 is a wasteful number, since it uses less digits than its factorization.

16633400451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291814065.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 16633400451 in words is "sixteen billion, six hundred thirty-three million, four hundred thousand, four hundred fifty-one".