497891856918149 has 16 divisors (see below), whose sum is σ = 520079297149440. Its totient is φ = 476338733785200.

The previous prime is 497891856918097. The next prime is 497891856918163. The reversal of 497891856918149 is 941819658198794.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-497891856918149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497891856914149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 758424377 + ... + 759080574.

It is an arithmetic number, because the mean of its divisors is an integer number (32504956071840).

Almost surely, 2^{497891856918149} is an apocalyptic number.

It is an amenable number.

497891856918149 is a deficient number, since it is larger than the sum of its proper divisors (22187440231291).

497891856918149 is a wasteful number, since it uses less digits than its factorization.

497891856918149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517505160.

The product of its digits is 11287019520, while the sum is 89.

The spelling of 497891856918149 in words is "four hundred ninety-seven trillion, eight hundred ninety-one billion, eight hundred fifty-six million, nine hundred eighteen thousand, one hundred forty-nine".