85381738718449 has 16 divisors (see below), whose sum is σ = 88797256167424. Its totient is φ = 82009528012800.

The previous prime is 85381738718429. The next prime is 85381738718459. The reversal of 85381738718449 is 94481783718358.

It is a cyclic number.

It is not a de Polignac number, because 85381738718449 - 2³⁵ = 85347378980081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85381738718429) 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, 13888257 + ... + 19069534.

It is an arithmetic number, because the mean of its divisors is an integer number (5549828510464).

Almost surely, 2^{85381738718449} is an apocalyptic number.

It is an amenable number.

85381738718449 is a deficient number, since it is larger than the sum of its proper divisors (3415517448975).

85381738718449 is a wasteful number, since it uses less digits than its factorization.

85381738718449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32958448.

The product of its digits is 1300561920, while the sum is 76.

The spelling of 85381738718449 in words is "eighty-five trillion, three hundred eighty-one billion, seven hundred thirty-eight million, seven hundred eighteen thousand, four hundred forty-nine".