28980685745 has 48 divisors (see below), whose sum is σ = 40505294592. Its totient is φ = 19730599680.

The previous prime is 28980685733. The next prime is 28980685751. The reversal of 28980685745 is 54758608982.

It is not a de Polignac number, because 28980685745 - 2⁴ = 28980685729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1356869 + ... + 1378061.

It is an arithmetic number, because the mean of its divisors is an integer number (843860304).

Almost surely, 2^28980685745 is an apocalyptic number.

It is an amenable number.

28980685745 is a deficient number, since it is larger than the sum of its proper divisors (11524608847).

28980685745 is a wasteful number, since it uses less digits than its factorization.

28980685745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21302 (or 21279 counting only the distinct ones).

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 28980685745 in words is "twenty-eight billion, nine hundred eighty million, six hundred eighty-five thousand, seven hundred forty-five".