801225040079 has 4 divisors (see below), whose sum is σ = 801664550976. Its totient is φ = 800785529184.

The previous prime is 801225040039. The next prime is 801225040129. The reversal of 801225040079 is 970040522108.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801225040079 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 (801225040039) by changing a digit.

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, 219752714 + ... + 219756359.

It is an arithmetic number, because the mean of its divisors is an integer number (200416137744).

Almost surely, 2^801225040079 is an apocalyptic number.

801225040079 is a deficient number, since it is larger than the sum of its proper divisors (439510897).

801225040079 is a wasteful number, since it uses less digits than its factorization.

801225040079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439510896.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 801225040079 in words is "eight hundred one billion, two hundred twenty-five million, forty thousand, seventy-nine".