8130782776 has 16 divisors (see below), whose sum is σ = 15247407240. Its totient is φ = 4064807520.

The previous prime is 8130782771. The next prime is 8130782783. The reversal of 8130782776 is 6772870318.

It is a super-2 number, since 2×8130782776² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8130782771) 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, 10671 + ... + 127966.

Almost surely, 2^8130782776 is an apocalyptic number.

It is an amenable number.

8130782776 is a deficient number, since it is larger than the sum of its proper divisors (7116624464).

8130782776 is a wasteful number, since it uses less digits than its factorization.

8130782776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145974 (or 145970 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 49.

The square root of 8130782776 is about 90170.8532509258. The cubic root of 8130782776 is about 2010.8397088841.

The spelling of 8130782776 in words is "eight billion, one hundred thirty million, seven hundred eighty-two thousand, seven hundred seventy-six".