8077817420 has 24 divisors (see below), whose sum is σ = 16966762848. Its totient is φ = 3230489600.

The previous prime is 8077817411. The next prime is 8077817443. The reversal of 8077817420 is 247187708.

It is a super-2 number, since 2×8077817420² (a number of 21 digits) contains 22 as substring.

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, 71705 + ... + 145935.

It is an arithmetic number, because the mean of its divisors is an integer number (706948452).

Almost surely, 2^8077817420 is an apocalyptic number.

It is an amenable number.

8077817420 is an abundant number, since it is smaller than the sum of its proper divisors (8888945428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8077817420 is a wasteful number, since it uses less digits than its factorization.

8077817420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79681 (or 79679 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 44.

The square root of 8077817420 is about 89876.6789551105. The cubic root of 8077817420 is about 2006.4638716756.

The spelling of 8077817420 in words is "eight billion, seventy-seven million, eight hundred seventeen thousand, four hundred twenty".