8070778281 has 8 divisors (see below), whose sum is σ = 10767841920. Its totient is φ = 5377116752.

The previous prime is 8070778279. The next prime is 8070778307. The reversal of 8070778281 is 1828770708.

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

It is a cyclic number.

It is not a de Polignac number, because 8070778281 - 2¹ = 8070778279 is a prime.

It is a super-2 number, since 2×8070778281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8070778281.

It is not an unprimeable number, because it can be changed into a prime (8070778201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844986 + ... + 854483.

It is an arithmetic number, because the mean of its divisors is an integer number (1345980240).

Almost surely, 2^8070778281 is an apocalyptic number.

It is an amenable number.

8070778281 is a deficient number, since it is larger than the sum of its proper divisors (2697063639).

8070778281 is a wasteful number, since it uses less digits than its factorization.

8070778281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1701055.

The product of its (nonzero) digits is 351232, while the sum is 48.

The square root of 8070778281 is about 89837.5104341166. The cubic root of 8070778281 is about 2005.8808807550.

The spelling of 8070778281 in words is "eight billion, seventy million, seven hundred seventy-eight thousand, two hundred eighty-one".