16621798348 has 48 divisors (see below), whose sum is σ = 33110138880. Its totient is φ = 7252644096.

The previous prime is 16621798327. The next prime is 16621798351. The reversal of 16621798348 is 84389712661.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76140 + ... + 197587.

It is an arithmetic number, because the mean of its divisors is an integer number (689794560).

Almost surely, 2^16621798348 is an apocalyptic number.

It is an amenable number.

16621798348 is a deficient number, since it is larger than the sum of its proper divisors (16488340532).

16621798348 is a wasteful number, since it uses less digits than its factorization.

16621798348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273814 (or 273812 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The spelling of 16621798348 in words is "sixteen billion, six hundred twenty-one million, seven hundred ninety-eight thousand, three hundred forty-eight".