387663878790 has 24 divisors (see below), whose sum is σ = 1007926085088. Its totient is φ = 103377034320.

The previous prime is 387663878729. The next prime is 387663878827. The reversal of 387663878790 is 97878366783.

387663878790 is a `hidden beast` number, since 3 + 87 + 6 + 6 + 387 + 87 + 90 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2153688126 + ... + 2153688305.

It is an arithmetic number, because the mean of its divisors is an integer number (41996920212).

Almost surely, 2^387663878790 is an apocalyptic number.

387663878790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

387663878790 is an abundant number, since it is smaller than the sum of its proper divisors (620262206298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

387663878790 is a wasteful number, since it uses less digits than its factorization.

387663878790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4307376444 (or 4307376441 counting only the distinct ones).

The product of its (nonzero) digits is 512096256, while the sum is 72.

The spelling of 387663878790 in words is "three hundred eighty-seven billion, six hundred sixty-three million, eight hundred seventy-eight thousand, seven hundred ninety".