8047361977 has 2 divisors, whose sum is σ = 8047361978. Its totient is φ = 8047361976.

The previous prime is 8047361921. The next prime is 8047361983. The reversal of 8047361977 is 7791637408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6502164496 + 1545197481 = 80636^2 + 39309^2 .

It is a cyclic number.

It is not a de Polignac number, because 8047361977 - 2¹⁵ = 8047329209 is a prime.

It is not a weakly prime, because it can be changed into another prime (8047361677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4023680988 + 4023680989.

It is an arithmetic number, because the mean of its divisors is an integer number (4023680989).

Almost surely, 2^8047361977 is an apocalyptic number.

It is an amenable number.

8047361977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8047361977 is an equidigital number, since it uses as much as digits as its factorization.

8047361977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 52.

The square root of 8047361977 is about 89707.0898926055. The cubic root of 8047361977 is about 2003.9390681942.

Adding to 8047361977 its product of nonzero digits (1778112), we get a square (8049140089 = 89717²).

The spelling of 8047361977 in words is "eight billion, forty-seven million, three hundred sixty-one thousand, nine hundred seventy-seven".