28267552977 has 16 divisors (see below), whose sum is σ = 37798979520. Its totient is φ = 18790660800.

The previous prime is 28267552967. The next prime is 28267552997. The reversal of 28267552977 is 77925576282.

It is not a de Polignac number, because 28267552977 - 2⁶ = 28267552913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28267552977.

It is not an unprimeable number, because it can be changed into a prime (28267552967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1515327 + ... + 1533867.

It is an arithmetic number, because the mean of its divisors is an integer number (2362436220).

Almost surely, 2^28267552977 is an apocalyptic number.

It is an amenable number.

28267552977 is a deficient number, since it is larger than the sum of its proper divisors (9531426543).

28267552977 is a wasteful number, since it uses less digits than its factorization.

28267552977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19984.

The product of its digits is 29635200, while the sum is 60.

The spelling of 28267552977 in words is "twenty-eight billion, two hundred sixty-seven million, five hundred fifty-two thousand, nine hundred seventy-seven".