85140482491 has 2 divisors, whose sum is σ = 85140482492. Its totient is φ = 85140482490.

The previous prime is 85140482429. The next prime is 85140482569. The reversal of 85140482491 is 19428404158.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85140482491 is a prime.

It is not a weakly prime, because it can be changed into another prime (85140482411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42570241245 + 42570241246.

It is an arithmetic number, because the mean of its divisors is an integer number (42570241246).

Almost surely, 2^85140482491 is an apocalyptic number.

85140482491 is a deficient number, since it is larger than the sum of its proper divisors (1).

85140482491 is an equidigital number, since it uses as much as digits as its factorization.

85140482491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 85140482491 in words is "eighty-five billion, one hundred forty million, four hundred eighty-two thousand, four hundred ninety-one".