1061006000991 has 8 divisors (see below), whose sum is σ = 1414824043440. Its totient is φ = 707262646272.

The previous prime is 1061006000959. The next prime is 1061006000993. The reversal of 1061006000991 is 1990006001601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1061006000991 - 2⁵ = 1061006000959 is a prime.

It is a super-2 number, since 2×1061006000991² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061006000993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18638776 + ... + 18695613.

It is an arithmetic number, because the mean of its divisors is an integer number (176853005430).

Almost surely, 2^{1061006000991} is an apocalyptic number.

1061006000991 is a deficient number, since it is larger than the sum of its proper divisors (353818042449).

1061006000991 is an equidigital number, since it uses as much as digits as its factorization.

1061006000991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37343865.

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 1061006000991 in words is "one trillion, sixty-one billion, six million, nine hundred ninety-one", and thus it is an aban number.