8378751551 has 2 divisors, whose sum is σ = 8378751552. Its totient is φ = 8378751550.

The previous prime is 8378751547. The next prime is 8378751559. The reversal of 8378751551 is 1551578738.

8378751551 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8378751551 - 2² = 8378751547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8378751551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8378751559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4189375775 + 4189375776.

It is an arithmetic number, because the mean of its divisors is an integer number (4189375776).

Almost surely, 2^8378751551 is an apocalyptic number.

8378751551 is a deficient number, since it is larger than the sum of its proper divisors (1).

8378751551 is an equidigital number, since it uses as much as digits as its factorization.

8378751551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176000, while the sum is 50.

The square root of 8378751551 is about 91535.5207064449. The cubic root of 8378751551 is about 2031.0772309247.

The spelling of 8378751551 in words is "eight billion, three hundred seventy-eight million, seven hundred fifty-one thousand, five hundred fifty-one".