8010426781 has 4 divisors (see below), whose sum is σ = 9154773472. Its totient is φ = 6866080092.

The previous prime is 8010426779. The next prime is 8010426791. The reversal of 8010426781 is 1876240108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8010426781 - 2¹ = 8010426779 is a prime.

It is a super-2 number, since 2×8010426781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8010426781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8010426751) 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, 572173335 + ... + 572173348.

It is an arithmetic number, because the mean of its divisors is an integer number (2288693368).

Almost surely, 2^8010426781 is an apocalyptic number.

It is an amenable number.

8010426781 is a deficient number, since it is larger than the sum of its proper divisors (1144346691).

8010426781 is a wasteful number, since it uses less digits than its factorization.

8010426781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144346690.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 8010426781 is about 89500.9875979031. The cubic root of 8010426781 is about 2000.8685211975.

Adding to 8010426781 its reverse (1876240108), we get a palindrome (9886666889).

The spelling of 8010426781 in words is "eight billion, ten million, four hundred twenty-six thousand, seven hundred eighty-one".