849745136513 has 16 divisors (see below), whose sum is σ = 1058440661376. Its totient is φ = 664225505280.

The previous prime is 849745136509. The next prime is 849745136551. The reversal of 849745136513 is 315631547948.

It is a cyclic number.

It is not a de Polignac number, because 849745136513 - 2² = 849745136509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (849745138513) 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, 56244608 + ... + 56259713.

It is an arithmetic number, because the mean of its divisors is an integer number (66152541336).

Almost surely, 2^849745136513 is an apocalyptic number.

849745136513 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

It is an amenable number.

849745136513 is a deficient number, since it is larger than the sum of its proper divisors (208695524863).

849745136513 is a wasteful number, since it uses less digits than its factorization.

849745136513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112504424.

The product of its digits is 10886400, while the sum is 56.

The spelling of 849745136513 in words is "eight hundred forty-nine billion, seven hundred forty-five million, one hundred thirty-six thousand, five hundred thirteen".