28150774006387 has 4 divisors (see below), whose sum is σ = 29058863490496. Its totient is φ = 27242684522280.

The previous prime is 28150774006379. The next prime is 28150774006409. The reversal of 28150774006387 is 78360047705182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28150774006387 - 2³ = 28150774006379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28150774006987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454044742008 + ... + 454044742069.

It is an arithmetic number, because the mean of its divisors is an integer number (7264715872624).

Almost surely, 2^{28150774006387} is an apocalyptic number.

28150774006387 is a deficient number, since it is larger than the sum of its proper divisors (908089484109).

28150774006387 is an equidigital number, since it uses as much as digits as its factorization.

28150774006387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908089484108.

The product of its (nonzero) digits is 15805440, while the sum is 58.

The spelling of 28150774006387 in words is "twenty-eight trillion, one hundred fifty billion, seven hundred seventy-four million, six thousand, three hundred eighty-seven".