134642579381 has 2 divisors, whose sum is σ = 134642579382. Its totient is φ = 134642579380.

The previous prime is 134642579371. The next prime is 134642579387. The reversal of 134642579381 is 183975246431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129046192900 + 5596386481 = 359230^2 + 74809^2 .

It is an emirp because it is prime and its reverse (183975246431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134642579381 - 2¹⁴ = 134642562997 is a prime.

It is a super-2 number, since 2×134642579381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134642579387) by changing a digit.

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 as a sum of consecutive naturals, namely, 67321289690 + 67321289691.

It is an arithmetic number, because the mean of its divisors is an integer number (67321289691).

Almost surely, 2^134642579381 is an apocalyptic number.

It is an amenable number.

134642579381 is a deficient number, since it is larger than the sum of its proper divisors (1).

134642579381 is an equidigital number, since it uses as much as digits as its factorization.

134642579381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 53.

The spelling of 134642579381 in words is "one hundred thirty-four billion, six hundred forty-two million, five hundred seventy-nine thousand, three hundred eighty-one".