28070246706251 has 8 divisors (see below), whose sum is σ = 28530499066608. Its totient is φ = 27609997068000.

The previous prime is 28070246706217. The next prime is 28070246706283. The reversal of 28070246706251 is 15260764207082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28070246706251 is a prime.

It is a super-2 number, since 2×28070246706251² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28070246706251.

It is not an unprimeable number, because it can be changed into a prime (28070246706211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37854236 + ... + 38588646.

It is an arithmetic number, because the mean of its divisors is an integer number (3566312383326).

Almost surely, 2^{28070246706251} is an apocalyptic number.

28070246706251 is a deficient number, since it is larger than the sum of its proper divisors (460252360357).

28070246706251 is an equidigital number, since it uses as much as digits as its factorization.

28070246706251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361053.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 28070246706251 in words is "twenty-eight trillion, seventy billion, two hundred forty-six million, seven hundred six thousand, two hundred fifty-one".