67130145787 has 2 divisors, whose sum is σ = 67130145788. Its totient is φ = 67130145786.

The previous prime is 67130145743. The next prime is 67130145821. The reversal of 67130145787 is 78754103176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67130145787 - 2²⁷ = 66995928059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67130145787.

It is not a weakly prime, because it can be changed into another prime (67130145727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33565072893 + 33565072894.

It is an arithmetic number, because the mean of its divisors is an integer number (33565072894).

Almost surely, 2^67130145787 is an apocalyptic number.

67130145787 is a deficient number, since it is larger than the sum of its proper divisors (1).

67130145787 is an equidigital number, since it uses as much as digits as its factorization.

67130145787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 49.

The spelling of 67130145787 in words is "sixty-seven billion, one hundred thirty million, one hundred forty-five thousand, seven hundred eighty-seven".