1016666758493 has 8 divisors (see below), whose sum is σ = 1023297180888. Its totient is φ = 1010038296384.

The previous prime is 1016666758463. The next prime is 1016666758529. The reversal of 1016666758493 is 3948576666101.

It can be written as a sum of positive squares in 4 ways, for example, as 23339589529 + 993327168964 = 152773^2 + 996658^2 .

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 1016666758493 - 2¹⁴ = 1016666742109 is a prime.

It is a super-2 number, since 2×1016666758493² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1016666758463) 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, 557855 + ... + 1531187.

It is an arithmetic number, because the mean of its divisors is an integer number (127912147611).

Almost surely, 2^{1016666758493} is an apocalyptic number.

It is an amenable number.

1016666758493 is a deficient number, since it is larger than the sum of its proper divisors (6630422395).

1016666758493 is an equidigital number, since it uses as much as digits as its factorization.

1016666758493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980143.

The product of its (nonzero) digits is 39191040, while the sum is 62.

The spelling of 1016666758493 in words is "one trillion, sixteen billion, six hundred sixty-six million, seven hundred fifty-eight thousand, four hundred ninety-three".