6071989981 has 4 divisors (see below), whose sum is σ = 6079845852. Its totient is φ = 6064134112.

The previous prime is 6071989951. The next prime is 6071990003. The reversal of 6071989981 is 1899891706.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1899891706 = 2 ⋅949945853.

It can be written as a sum of positive squares in 2 ways, for example, as 1134679225 + 4937310756 = 33685^2 + 70266^2 .

It is a cyclic number.

It is not a de Polignac number, because 6071989981 - 2¹⁹ = 6071465693 is a prime.

It is a super-2 number, since 2×6071989981² = 73738124658728760722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6071989921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3926776 + ... + 3928321.

It is an arithmetic number, because the mean of its divisors is an integer number (1519961463).

Almost surely, 2^6071989981 is an apocalyptic number.

It is an amenable number.

6071989981 is a deficient number, since it is larger than the sum of its proper divisors (7855871).

6071989981 is an equidigital number, since it uses as much as digits as its factorization.

6071989981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7855870.

The product of its (nonzero) digits is 1959552, while the sum is 58.

The square root of 6071989981 is about 77922.9746672957. The cubic root of 6071989981 is about 1824.3591901444.

The spelling of 6071989981 in words is "six billion, seventy-one million, nine hundred eighty-nine thousand, nine hundred eighty-one".