84776977039 has 2 divisors, whose sum is σ = 84776977040. Its totient is φ = 84776977038.

The previous prime is 84776977037. The next prime is 84776977081. The reversal of 84776977039 is 93077967748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84776977039 - 2¹ = 84776977037 is a prime.

It is a super-2 number, since 2×84776977039² (a number of 23 digits) contains 22 as substring.

Together with 84776977037, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84776977037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42388488519 + 42388488520.

It is an arithmetic number, because the mean of its divisors is an integer number (42388488520).

Almost surely, 2^84776977039 is an apocalyptic number.

84776977039 is a deficient number, since it is larger than the sum of its proper divisors (1).

84776977039 is an equidigital number, since it uses as much as digits as its factorization.

84776977039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112021056, while the sum is 67.

The spelling of 84776977039 in words is "eighty-four billion, seven hundred seventy-six million, nine hundred seventy-seven thousand, thirty-nine".