85786667381 has 16 divisors (see below), whose sum is σ = 90903859200. Its totient is φ = 80824828800.

The previous prime is 85786667357. The next prime is 85786667389. The reversal of 85786667381 is 18376668758.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85786667381 is a prime.

It is a super-2 number, since 2×85786667381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85786667389) 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, 538355 + ... + 679263.

It is an arithmetic number, because the mean of its divisors is an integer number (5681491200).

Almost surely, 2^85786667381 is an apocalyptic number.

It is an amenable number.

85786667381 is a deficient number, since it is larger than the sum of its proper divisors (5117191819).

85786667381 is a wasteful number, since it uses less digits than its factorization.

85786667381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141460.

The product of its digits is 81285120, while the sum is 65.

The spelling of 85786667381 in words is "eighty-five billion, seven hundred eighty-six million, six hundred sixty-seven thousand, three hundred eighty-one".