28057745177 has 16 divisors (see below), whose sum is σ = 35573990400. Its totient is φ = 21492612240.

The previous prime is 28057745167. The next prime is 28057745203. The reversal of 28057745177 is 77154775082.

It is a happy number.

It is not a de Polignac number, because 28057745177 - 2⁸ = 28057744921 is a prime.

It is a super-2 number, since 2×28057745177² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28057745167) 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, 3083477 + ... + 3092562.

It is an arithmetic number, because the mean of its divisors is an integer number (2223374400).

Almost surely, 2^28057745177 is an apocalyptic number.

It is an amenable number.

28057745177 is a deficient number, since it is larger than the sum of its proper divisors (7516245223).

28057745177 is a wasteful number, since it uses less digits than its factorization.

28057745177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176116.

The product of its (nonzero) digits is 3841600, while the sum is 53.

The spelling of 28057745177 in words is "twenty-eight billion, fifty-seven million, seven hundred forty-five thousand, one hundred seventy-seven".