2777040138 has 8 divisors (see below), whose sum is σ = 5554080288. Its totient is φ = 925680044.

The previous prime is 2777040059. The next prime is 2777040157. The reversal of 2777040138 is 8310407772.

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

2777040138 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2777040096 and 2777040105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231420006 + ... + 231420017.

It is an arithmetic number, because the mean of its divisors is an integer number (694260036).

Almost surely, 2^2777040138 is an apocalyptic number.

2777040138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2777040138 is a wasteful number, since it uses less digits than its factorization.

2777040138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462840028.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 2777040138 is about 52697.6293394684. The cubic root of 2777040138 is about 1405.5966679237.

The spelling of 2777040138 in words is "two billion, seven hundred seventy-seven million, forty thousand, one hundred thirty-eight".