21628122915347 has 8 divisors (see below), whose sum is σ = 23461837998816. Its totient is φ = 19818695449152.

The previous prime is 21628122915317. The next prime is 21628122915353. The reversal of 21628122915347 is 74351922182612.

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

It is a cyclic number.

It is not a de Polignac number, because 21628122915347 - 2⁴² = 17230076404243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21628122915317) 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, 6071902463 + ... + 6071906024.

It is an arithmetic number, because the mean of its divisors is an integer number (2932729749852).

Almost surely, 2^{21628122915347} is an apocalyptic number.

21628122915347 is a deficient number, since it is larger than the sum of its proper divisors (1833715083469).

21628122915347 is a wasteful number, since it uses less digits than its factorization.

21628122915347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12143808637.

The product of its digits is 2903040, while the sum is 53.

The spelling of 21628122915347 in words is "twenty-one trillion, six hundred twenty-eight billion, one hundred twenty-two million, nine hundred fifteen thousand, three hundred forty-seven".