381464663615 has 12 divisors (see below), whose sum is σ = 532493530776. Its totient is φ = 261575769168.

The previous prime is 381464663609. The next prime is 381464663623. The reversal of 381464663615 is 516366464183.

It is not a de Polignac number, because 381464663615 - 2¹⁸ = 381464401471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 778499069 + ... + 778499558.

It is an arithmetic number, because the mean of its divisors is an integer number (44374460898).

Almost surely, 2^381464663615 is an apocalyptic number.

381464663615 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

381464663615 is a deficient number, since it is larger than the sum of its proper divisors (151028867161).

381464663615 is a wasteful number, since it uses less digits than its factorization.

381464663615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556998646 (or 1556998639 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 53.

The spelling of 381464663615 in words is "three hundred eighty-one billion, four hundred sixty-four million, six hundred sixty-three thousand, six hundred fifteen".