85250077547 has 2 divisors, whose sum is σ = 85250077548. Its totient is φ = 85250077546.

The previous prime is 85250077529. The next prime is 85250077603. The reversal of 85250077547 is 74577005258.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85250077547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85250077495 and 85250077504.

It is not a weakly prime, because it can be changed into another prime (85250077147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42625038773 + 42625038774.

It is an arithmetic number, because the mean of its divisors is an integer number (42625038774).

Almost surely, 2^85250077547 is an apocalyptic number.

85250077547 is a deficient number, since it is larger than the sum of its proper divisors (1).

85250077547 is an equidigital number, since it uses as much as digits as its factorization.

85250077547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744000, while the sum is 50.

The spelling of 85250077547 in words is "eighty-five billion, two hundred fifty million, seventy-seven thousand, five hundred forty-seven".