387772828680815 has 8 divisors (see below), whose sum is σ = 467007276708960. Its totient is φ = 309098341416672.

The previous prime is 387772828680793. The next prime is 387772828680823. The reversal of 387772828680815 is 518086828277783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387772828680815 - 2¹⁰ = 387772828679791 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387772828680815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139990189475 + ... + 139990192244.

It is an arithmetic number, because the mean of its divisors is an integer number (58375909588620).

Almost surely, 2^{387772828680815} is an apocalyptic number.

387772828680815 is a deficient number, since it is larger than the sum of its proper divisors (79234448028145).

387772828680815 is a wasteful number, since it uses less digits than its factorization.

387772828680815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279980382001.

The product of its (nonzero) digits is 4046192640, while the sum is 80.

The spelling of 387772828680815 in words is "three hundred eighty-seven trillion, seven hundred seventy-two billion, eight hundred twenty-eight million, six hundred eighty thousand, eight hundred fifteen".