8457768387 has 16 divisors (see below), whose sum is σ = 12532500000. Its totient is φ = 5637399552.

The previous prime is 8457768377. The next prime is 8457768391. The reversal of 8457768387 is 7838677548.

It is not a de Polignac number, because 8457768387 - 2⁶ = 8457768323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8457768317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122239 + ... + 178487.

It is an arithmetic number, because the mean of its divisors is an integer number (783281250).

Almost surely, 2^8457768387 is an apocalyptic number.

8457768387 is a deficient number, since it is larger than the sum of its proper divisors (4074731613).

8457768387 is a wasteful number, since it uses less digits than its factorization.

8457768387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61827 (or 61821 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The square root of 8457768387 is about 91966.1263020249. The cubic root of 8457768387 is about 2037.4420382824.

The spelling of 8457768387 in words is "eight billion, four hundred fifty-seven million, seven hundred sixty-eight thousand, three hundred eighty-seven".