381660135013 has 16 divisors (see below), whose sum is σ = 407317926400. Its totient is φ = 356593849200.

The previous prime is 381660135011. The next prime is 381660135053. The reversal of 381660135013 is 310531066183.

It is a cyclic number.

It is not a de Polignac number, because 381660135013 - 2¹ = 381660135011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381660135011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79731 + ... + 877312.

It is an arithmetic number, because the mean of its divisors is an integer number (25457370400).

Almost surely, 2^381660135013 is an apocalyptic number.

It is an amenable number.

381660135013 is a deficient number, since it is larger than the sum of its proper divisors (25657791387).

381660135013 is a wasteful number, since it uses less digits than its factorization.

381660135013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957352.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 381660135013 in words is "three hundred eighty-one billion, six hundred sixty million, one hundred thirty-five thousand, thirteen".