1006801521893 has 4 divisors (see below), whose sum is σ = 1006830707820. Its totient is φ = 1006772335968.

The previous prime is 1006801521881. The next prime is 1006801521907. The reversal of 1006801521893 is 3981251086001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77260649764 + 929540872129 = 277958^2 + 964127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006801521893 - 2¹⁴ = 1006801505509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006801521823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14541158 + ... + 14610231.

It is an arithmetic number, because the mean of its divisors is an integer number (251707676955).

Almost surely, 2^{1006801521893} is an apocalyptic number.

It is an amenable number.

1006801521893 is a deficient number, since it is larger than the sum of its proper divisors (29185927).

1006801521893 is an equidigital number, since it uses as much as digits as its factorization.

1006801521893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29185926.

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 1006801521893 in words is "one trillion, six billion, eight hundred one million, five hundred twenty-one thousand, eight hundred ninety-three".