1006105560991 has 2 divisors, whose sum is σ = 1006105560992. Its totient is φ = 1006105560990.

The previous prime is 1006105560983. The next prime is 1006105561051. The reversal of 1006105560991 is 1990655016001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1006105560991 - 2³ = 1006105560983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1006105561991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 503052780495 + 503052780496.

It is an arithmetic number, because the mean of its divisors is an integer number (503052780496).

Almost surely, 2^{1006105560991} is an apocalyptic number.

1006105560991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1006105560991 is an equidigital number, since it uses as much as digits as its factorization.

1006105560991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 43.

The spelling of 1006105560991 in words is "one trillion, six billion, one hundred five million, five hundred sixty thousand, nine hundred ninety-one".