9816497492457 has 8 divisors (see below), whose sum is σ = 13539996541440. Its totient is φ = 6318665052560.

The previous prime is 9816497492453. The next prime is 9816497492491. The reversal of 9816497492457 is 7542947946189.

9816497492457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9816497492457 - 2² = 9816497492453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9816497492453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56416652169 + ... + 56416652342.

It is an arithmetic number, because the mean of its divisors is an integer number (1692499567680).

Almost surely, 2^{9816497492457} is an apocalyptic number.

It is an amenable number.

9816497492457 is a deficient number, since it is larger than the sum of its proper divisors (3723499048983).

9816497492457 is a wasteful number, since it uses less digits than its factorization.

9816497492457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112833304543.

The product of its digits is 1097349120, while the sum is 75.

The spelling of 9816497492457 in words is "nine trillion, eight hundred sixteen billion, four hundred ninety-seven million, four hundred ninety-two thousand, four hundred fifty-seven".