28157874029 has 2 divisors, whose sum is σ = 28157874030. Its totient is φ = 28157874028.

The previous prime is 28157874013. The next prime is 28157874047. The reversal of 28157874029 is 92047875182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15426136804 + 12731737225 = 124202^2 + 112835^2 .

It is a cyclic number.

It is not a de Polignac number, because 28157874029 - 2⁴ = 28157874013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28157864029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14078937014 + 14078937015.

It is an arithmetic number, because the mean of its divisors is an integer number (14078937015).

Almost surely, 2^28157874029 is an apocalyptic number.

It is an amenable number.

28157874029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28157874029 is an equidigital number, since it uses as much as digits as its factorization.

28157874029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 28157874029 in words is "twenty-eight billion, one hundred fifty-seven million, eight hundred seventy-four thousand, twenty-nine".