85400077751 has 2 divisors, whose sum is σ = 85400077752. Its totient is φ = 85400077750.

The previous prime is 85400077747. The next prime is 85400077753. The reversal of 85400077751 is 15777000458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85400077751 - 2² = 85400077747 is a prime.

Together with 85400077753, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85400077753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42700038875 + 42700038876.

It is an arithmetic number, because the mean of its divisors is an integer number (42700038876).

Almost surely, 2^85400077751 is an apocalyptic number.

85400077751 is a deficient number, since it is larger than the sum of its proper divisors (1).

85400077751 is an equidigital number, since it uses as much as digits as its factorization.

85400077751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274400, while the sum is 44.

The spelling of 85400077751 in words is "eighty-five billion, four hundred million, seventy-seven thousand, seven hundred fifty-one".