381697257735 has 24 divisors (see below), whose sum is σ = 690374172384. Its totient is φ = 194720919360.

The previous prime is 381697257713. The next prime is 381697257749. The reversal of 381697257735 is 537752796183.

It is not a de Polignac number, because 381697257735 - 2¹⁷ = 381697126663 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184393776 + ... + 184395845.

It is an arithmetic number, because the mean of its divisors is an integer number (28765590516).

Almost surely, 2^381697257735 is an apocalyptic number.

381697257735 is a deficient number, since it is larger than the sum of its proper divisors (308676914649).

381697257735 is a wasteful number, since it uses less digits than its factorization.

381697257735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368789655 (or 368789652 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 63.

The spelling of 381697257735 in words is "three hundred eighty-one billion, six hundred ninety-seven million, two hundred fifty-seven thousand, seven hundred thirty-five".