8278020377 has 16 divisors (see below), whose sum is σ = 9568849920. Its totient is φ = 7082154000.

The previous prime is 8278020353. The next prime is 8278020383. The reversal of 8278020377 is 7730208728.

It is a cyclic number.

It is not a de Polignac number, because 8278020377 - 2⁶ = 8278020313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8278020977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99593 + ... + 162710.

It is an arithmetic number, because the mean of its divisors is an integer number (598053120).

Almost surely, 2^8278020377 is an apocalyptic number.

It is an amenable number.

8278020377 is a deficient number, since it is larger than the sum of its proper divisors (1290829543).

8278020377 is a wasteful number, since it uses less digits than its factorization.

8278020377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262484.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 8278020377 is about 90983.6269721097. The cubic root of 8278020377 is about 2022.9050428458.

The spelling of 8278020377 in words is "eight billion, two hundred seventy-eight million, twenty thousand, three hundred seventy-seven".