28377694363 has 4 divisors (see below), whose sum is σ = 30046970520. Its totient is φ = 26708418208.

The previous prime is 28377694361. The next prime is 28377694391. The reversal of 28377694363 is 36349677382.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36349677382 = 2 ⋅18174838691.

It is not a de Polignac number, because 28377694363 - 2¹ = 28377694361 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28377694298 and 28377694307.

It is not an unprimeable number, because it can be changed into a prime (28377694361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834638053 + ... + 834638086.

It is an arithmetic number, because the mean of its divisors is an integer number (7511742630).

Almost surely, 2^28377694363 is an apocalyptic number.

28377694363 is a deficient number, since it is larger than the sum of its proper divisors (1669276157).

28377694363 is a wasteful number, since it uses less digits than its factorization.

28377694363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669276156.

The product of its digits is 27433728, while the sum is 58.

The spelling of 28377694363 in words is "twenty-eight billion, three hundred seventy-seven million, six hundred ninety-four thousand, three hundred sixty-three".