381777655015 has 8 divisors (see below), whose sum is σ = 458173151568. Its totient is φ = 305395480320.

The previous prime is 381777654959. The next prime is 381777655033. The reversal of 381777655015 is 510556777183.

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

It is a de Polignac number, because none of the positive numbers 2^k-381777655015 is a prime.

It is a Duffinian number.

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, 3267306 + ... + 3382135.

It is an arithmetic number, because the mean of its divisors is an integer number (57271643946).

Almost surely, 2^381777655015 is an apocalyptic number.

381777655015 is a deficient number, since it is larger than the sum of its proper divisors (76395496553).

381777655015 is a wasteful number, since it uses less digits than its factorization.

381777655015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6660929.

The product of its (nonzero) digits is 6174000, while the sum is 55.

The spelling of 381777655015 in words is "three hundred eighty-one billion, seven hundred seventy-seven million, six hundred fifty-five thousand, fifteen".