28448850970511 has 16 divisors (see below), whose sum is σ = 28603870924800. Its totient is φ = 28294153524000.

The previous prime is 28448850970457. The next prime is 28448850970517. The reversal of 28448850970511 is 11507905884482.

It is a cyclic number.

It is not a de Polignac number, because 28448850970511 - 2¹⁸ = 28448850708367 is a prime.

It is a super-2 number, since 2×28448850970511² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28448850970517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 643923020 + ... + 643967198.

It is an arithmetic number, because the mean of its divisors is an integer number (1787741932800).

Almost surely, 2^{28448850970511} is an apocalyptic number.

28448850970511 is a deficient number, since it is larger than the sum of its proper divisors (155019954289).

28448850970511 is a wasteful number, since it uses less digits than its factorization.

28448850970511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47750.

The product of its (nonzero) digits is 25804800, while the sum is 62.

The spelling of 28448850970511 in words is "twenty-eight trillion, four hundred forty-eight billion, eight hundred fifty million, nine hundred seventy thousand, five hundred eleven".