7878371051 has 2 divisors, whose sum is σ = 7878371052. Its totient is φ = 7878371050.

The previous prime is 7878371023. The next prime is 7878371069. The reversal of 7878371051 is 1501738787.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7878371051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7878370987 and 7878371005.

It is not a weakly prime, because it can be changed into another prime (7878301051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3939185525 + 3939185526.

It is an arithmetic number, because the mean of its divisors is an integer number (3939185526).

Almost surely, 2^7878371051 is an apocalyptic number.

7878371051 is a deficient number, since it is larger than the sum of its proper divisors (1).

7878371051 is an equidigital number, since it uses as much as digits as its factorization.

7878371051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 47.

The square root of 7878371051 is about 88760.1884349059. The cubic root of 7878371051 is about 1989.8124492656.

The spelling of 7878371051 in words is "seven billion, eight hundred seventy-eight million, three hundred seventy-one thousand, fifty-one".