28360407377 has 4 divisors (see below), whose sum is σ = 28361224116. Its totient is φ = 28359590640.

The previous prime is 28360407337. The next prime is 28360407391. The reversal of 28360407377 is 77370406382.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11275041856 + 17085365521 = 106184^2 + 130711^2 .

It is a cyclic number.

It is not a de Polignac number, because 28360407377 - 2³² = 24065440081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28360407337) 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, 353858 + ... + 426539.

It is an arithmetic number, because the mean of its divisors is an integer number (7090306029).

Almost surely, 2^28360407377 is an apocalyptic number.

It is an amenable number.

28360407377 is a deficient number, since it is larger than the sum of its proper divisors (816739).

28360407377 is an equidigital number, since it uses as much as digits as its factorization.

28360407377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816738.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 28360407377 in words is "twenty-eight billion, three hundred sixty million, four hundred seven thousand, three hundred seventy-seven".