1075420985491 has 2 divisors, whose sum is σ = 1075420985492. Its totient is φ = 1075420985490.

The previous prime is 1075420985477. The next prime is 1075420985503. The reversal of 1075420985491 is 1945890245701.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1075420985491 - 2⁵ = 1075420985459 is a prime.

It is a super-2 number, since 2×1075420985491² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1075420965491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537710492745 + 537710492746.

It is an arithmetic number, because the mean of its divisors is an integer number (537710492746).

Almost surely, 2^{1075420985491} is an apocalyptic number.

1075420985491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075420985491 is an equidigital number, since it uses as much as digits as its factorization.

1075420985491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 1075420985491 in words is "one trillion, seventy-five billion, four hundred twenty million, nine hundred eighty-five thousand, four hundred ninety-one".