16621300401 has 8 divisors (see below), whose sum is σ = 23465365344. Its totient is φ = 10429051200.

The previous prime is 16621300393. The next prime is 16621300459. The reversal of 16621300401 is 10400312661.

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

It is not a de Polignac number, because 16621300401 - 2³ = 16621300393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16621300481) 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, 162953875 + ... + 162953976.

It is an arithmetic number, because the mean of its divisors is an integer number (2933170668).

Almost surely, 2^16621300401 is an apocalyptic number.

It is an amenable number.

16621300401 is a deficient number, since it is larger than the sum of its proper divisors (6844064943).

16621300401 is a wasteful number, since it uses less digits than its factorization.

16621300401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325907871.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 16621300401 in words is "sixteen billion, six hundred twenty-one million, three hundred thousand, four hundred one".