801447310781 has 16 divisors (see below), whose sum is σ = 872953006464. Its totient is φ = 731378009664.

The previous prime is 801447310753. The next prime is 801447310813. The reversal of 801447310781 is 187013744108.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801447310781 is a prime.

It is a super-2 number, since 2×801447310781² (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 (801447310481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85871 + ... + 1268963.

It is an arithmetic number, because the mean of its divisors is an integer number (54559562904).

Almost surely, 2^801447310781 is an apocalyptic number.

It is an amenable number.

801447310781 is a deficient number, since it is larger than the sum of its proper divisors (71505695683).

801447310781 is a wasteful number, since it uses less digits than its factorization.

801447310781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183700.

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 801447310781 in words is "eight hundred one billion, four hundred forty-seven million, three hundred ten thousand, seven hundred eighty-one".