801606818402 has 16 divisors (see below), whose sum is σ = 1329900710712. Its totient is φ = 359973123840.

The previous prime is 801606818281. The next prime is 801606818423. The reversal of 801606818402 is 204818606108.

It can be written as a sum of positive squares in 4 ways, for example, as 801309635281 + 297183121 = 895159^2 + 17239^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416634599 + ... + 416636522.

Almost surely, 2^801606818402 is an apocalyptic number.

801606818402 is a deficient number, since it is larger than the sum of its proper divisors (528293892310).

801606818402 is a wasteful number, since it uses less digits than its factorization.

801606818402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833271173.

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 801606818402 in words is "eight hundred one billion, six hundred six million, eight hundred eighteen thousand, four hundred two".