387663878827 has 2 divisors, whose sum is σ = 387663878828. Its totient is φ = 387663878826.

The previous prime is 387663878729. The next prime is 387663878873. The reversal of 387663878827 is 728878366783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 387663878827 - 2¹¹ = 387663876779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387663878827.

It is not a weakly prime, because it can be changed into another prime (387663878227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193831939413 + 193831939414.

It is an arithmetic number, because the mean of its divisors is an integer number (193831939414).

Almost surely, 2^387663878827 is an apocalyptic number.

387663878827 is a deficient number, since it is larger than the sum of its proper divisors (1).

387663878827 is an equidigital number, since it uses as much as digits as its factorization.

387663878827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 910393344, while the sum is 73.

The spelling of 387663878827 in words is "three hundred eighty-seven billion, six hundred sixty-three million, eight hundred seventy-eight thousand, eight hundred twenty-seven".