16628244078 has 8 divisors (see below), whose sum is σ = 33256488168. Its totient is φ = 5542748024.

The previous prime is 16628244043. The next prime is 16628244107. The reversal of 16628244078 is 87044282661.

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

16628244078 is an admirable number.

It is a super-2 number, since 2×16628244078² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385687001 + ... + 1385687012.

It is an arithmetic number, because the mean of its divisors is an integer number (4157061021).

Almost surely, 2^16628244078 is an apocalyptic number.

16628244078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16628244078 is a wasteful number, since it uses less digits than its factorization.

16628244078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771374018.

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 16628244078 in words is "sixteen billion, six hundred twenty-eight million, two hundred forty-four thousand, seventy-eight".