1012056552491 has 2 divisors, whose sum is σ = 1012056552492. Its totient is φ = 1012056552490.

The previous prime is 1012056552487. The next prime is 1012056552497. The reversal of 1012056552491 is 1942556502101.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012056552491 - 2² = 1012056552487 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012056552497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506028276245 + 506028276246.

It is an arithmetic number, because the mean of its divisors is an integer number (506028276246).

Almost surely, 2^{1012056552491} is an apocalyptic number.

1012056552491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012056552491 is an equidigital number, since it uses as much as digits as its factorization.

1012056552491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 1012056552491 in words is "one trillion, twelve billion, fifty-six million, five hundred fifty-two thousand, four hundred ninety-one".