28061451873 has 24 divisors (see below), whose sum is σ = 49887027008. Its totient is φ = 14801644512.

The previous prime is 28061451833. The next prime is 28061451949. The reversal of 28061451873 is 37815416082.

28061451873 is a `hidden beast` number, since 2 + 8 + 0 + 61 + 4 + 518 + 73 = 666.

It is not a de Polignac number, because 28061451873 - 2⁶ = 28061451809 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28061451833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17130715 + ... + 17132352.

Almost surely, 2^28061451873 is an apocalyptic number.

It is an amenable number.

28061451873 is a deficient number, since it is larger than the sum of its proper divisors (21825575135).

28061451873 is a wasteful number, since it uses less digits than its factorization.

28061451873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34263093 (or 34263090 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 28061451873 in words is "twenty-eight billion, sixty-one million, four hundred fifty-one thousand, eight hundred seventy-three".