2778103057 has 4 divisors (see below), whose sum is σ = 2778239296. Its totient is φ = 2777966820.

The previous prime is 2778102979. The next prime is 2778103061. The reversal of 2778103057 is 7503018772.

2778103057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2778103057 - 2²³ = 2769714449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2778103357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30669 + ... + 80602.

It is an arithmetic number, because the mean of its divisors is an integer number (694559824).

Almost surely, 2^2778103057 is an apocalyptic number.

It is an amenable number.

2778103057 is a deficient number, since it is larger than the sum of its proper divisors (136239).

2778103057 is a wasteful number, since it uses less digits than its factorization.

2778103057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136238.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 2778103057 is about 52707.7134487923. The cubic root of 2778103057 is about 1405.7759769189.

The spelling of 2778103057 in words is "two billion, seven hundred seventy-eight million, one hundred three thousand, fifty-seven".