381276135774 has 64 divisors (see below), whose sum is σ = 861821856000. Its totient is φ = 124911718560.

The previous prime is 381276135769. The next prime is 381276135809. The reversal of 381276135774 is 477531672183.

381276135774 is a `hidden beast` number, since 3 + 8 + 1 + 2 + 7 + 61 + 3 + 577 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 381276135774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20345989 + ... + 20364719.

It is an arithmetic number, because the mean of its divisors is an integer number (13465966500).

Almost surely, 2^381276135774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381276135774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430910928000).

381276135774 is an abundant number, since it is smaller than the sum of its proper divisors (480545720226).

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

381276135774 is a wasteful number, since it uses less digits than its factorization.

381276135774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25190 (or 25184 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 54.

The spelling of 381276135774 in words is "three hundred eighty-one billion, two hundred seventy-six million, one hundred thirty-five thousand, seven hundred seventy-four".