228077537657 has 8 divisors (see below), whose sum is σ = 230111316936. Its totient is φ = 226044028672.

The previous prime is 228077537629. The next prime is 228077537713. The reversal of 228077537657 is 756735770822.

It can be written as a sum of positive squares in 4 ways, for example, as 24506023936 + 203571513721 = 156544^2 + 451189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228077537657 - 2⁶ = 228077537593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228077537596 and 228077537605.

It is not an unprimeable number, because it can be changed into a prime (228077537627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875263 + ... + 1993179.

It is an arithmetic number, because the mean of its divisors is an integer number (28763914617).

Almost surely, 2^228077537657 is an apocalyptic number.

It is an amenable number.

228077537657 is a deficient number, since it is larger than the sum of its proper divisors (2033779279).

228077537657 is a wasteful number, since it uses less digits than its factorization.

228077537657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135147.

The product of its (nonzero) digits is 34574400, while the sum is 59.

The spelling of 228077537657 in words is "two hundred twenty-eight billion, seventy-seven million, five hundred thirty-seven thousand, six hundred fifty-seven".