2070138314581 has 4 divisors (see below), whose sum is σ = 2070142212652. Its totient is φ = 2070134416512.

The previous prime is 2070138314567. The next prime is 2070138314593. The reversal of 2070138314581 is 1854138310702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 627328945681 + 1442809368900 = 792041^2 + 1201170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2070138314581 - 2¹³ = 2070138306389 is a prime.

It is a super-3 number, since 3×2070138314581³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070138314681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 997626 + ... + 2266171.

It is an arithmetic number, because the mean of its divisors is an integer number (517535553163).

Almost surely, 2^{2070138314581} is an apocalyptic number.

It is an amenable number.

2070138314581 is a deficient number, since it is larger than the sum of its proper divisors (3898071).

2070138314581 is an equidigital number, since it uses as much as digits as its factorization.

2070138314581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898070.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 2070138314581 in words is "two trillion, seventy billion, one hundred thirty-eight million, three hundred fourteen thousand, five hundred eighty-one".