801642991594 has 8 divisors (see below), whose sum is σ = 1210534719300. Its totient is φ = 398131418496.

The previous prime is 801642991577. The next prime is 801642991609. The reversal of 801642991594 is 495199246108.

It can be written as a sum of positive squares in 2 ways, for example, as 799262820225 + 2380171369 = 894015^2 + 48787^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345038279 + ... + 1345038874.

Almost surely, 2^801642991594 is an apocalyptic number.

801642991594 is a deficient number, since it is larger than the sum of its proper divisors (408891727706).

801642991594 is a wasteful number, since it uses less digits than its factorization.

801642991594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690077304.

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 801642991594 in words is "eight hundred one billion, six hundred forty-two million, nine hundred ninety-one thousand, five hundred ninety-four".