1016512651291 has 8 divisors (see below), whose sum is σ = 1035664232400. Its totient is φ = 997525461792.

The previous prime is 1016512651261. The next prime is 1016512651307. The reversal of 1016512651291 is 1921562156101.

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

It is a cyclic number.

It is not a de Polignac number, because 1016512651291 - 2⁷ = 1016512651163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016512651241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41085420 + ... + 41110153.

It is an arithmetic number, because the mean of its divisors is an integer number (129458029050).

Almost surely, 2^{1016512651291} is an apocalyptic number.

1016512651291 is a deficient number, since it is larger than the sum of its proper divisors (19151581109).

1016512651291 is an equidigital number, since it uses as much as digits as its factorization.

1016512651291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82195805.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 1016512651291 in words is "one trillion, sixteen billion, five hundred twelve million, six hundred fifty-one thousand, two hundred ninety-one".