28636545049 has 16 divisors (see below), whose sum is σ = 33944829696. Its totient is φ = 23645736000.

The previous prime is 28636545043. The next prime is 28636545061. The reversal of 28636545049 is 94054563682.

It is a cyclic number.

It is not a de Polignac number, because 28636545049 - 2⁵ = 28636545017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28636544987 and 28636545005.

It is not an unprimeable number, because it can be changed into a prime (28636545043) 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, 521197 + ... + 573514.

It is an arithmetic number, because the mean of its divisors is an integer number (2121551856).

Almost surely, 2^28636545049 is an apocalyptic number.

It is an amenable number.

28636545049 is a deficient number, since it is larger than the sum of its proper divisors (5308284647).

28636545049 is a wasteful number, since it uses less digits than its factorization.

28636545049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094856.

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 28636545049 in words is "twenty-eight billion, six hundred thirty-six million, five hundred forty-five thousand, forty-nine".