2778258051 has 12 divisors (see below), whose sum is σ = 4014015928. Its totient is φ = 1851721344.

The previous prime is 2778258047. The next prime is 2778258059. The reversal of 2778258051 is 1508528772.

It is not a de Polignac number, because 2778258051 - 2² = 2778258047 is a prime.

It is a super-3 number, since 3×2778258051³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2778257988 and 2778258006.

It is not an unprimeable number, because it can be changed into a prime (2778258059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3891 + ... + 74643.

Almost surely, 2^2778258051 is an apocalyptic number.

2778258051 is a deficient number, since it is larger than the sum of its proper divisors (1235757877).

2778258051 is a wasteful number, since it uses less digits than its factorization.

2778258051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75122 (or 75119 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 2778258051 is about 52709.1837443913. The cubic root of 2778258051 is about 1405.8021197923.

The spelling of 2778258051 in words is "two billion, seven hundred seventy-eight million, two hundred fifty-eight thousand, fifty-one".