277640138889 has 8 divisors (see below), whose sum is σ = 411318724320. Its totient is φ = 185093425908.

The previous prime is 277640138873. The next prime is 277640138927. The reversal of 277640138889 is 988831046772.

277640138889 is a `hidden beast` number, since 2 + 7 + 76 + 401 + 3 + 88 + 89 = 666.

It is not a de Polignac number, because 277640138889 - 2⁴ = 277640138873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (277640138849) 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, 5141484027 + ... + 5141484080.

It is an arithmetic number, because the mean of its divisors is an integer number (51414840540).

Almost surely, 2^277640138889 is an apocalyptic number.

It is an amenable number.

277640138889 is a deficient number, since it is larger than the sum of its proper divisors (133678585431).

277640138889 is a wasteful number, since it uses less digits than its factorization.

277640138889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10282968116 (or 10282968110 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 277640138889 in words is "two hundred seventy-seven billion, six hundred forty million, one hundred thirty-eight thousand, eight hundred eighty-nine".