499554889923 has 16 divisors (see below), whose sum is σ = 695480878080. Its totient is φ = 318547402656.

The previous prime is 499554889921. The next prime is 499554889931. The reversal of 499554889923 is 329988455994.

It is not a de Polignac number, because 499554889923 - 2¹ = 499554889921 is a prime.

It is a super-5 number, since 5×499554889923⁵ (a number of 60 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (499554889921) 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, 26822515 + ... + 26841132.

It is an arithmetic number, because the mean of its divisors is an integer number (43467554880).

Almost surely, 2^499554889923 is an apocalyptic number.

499554889923 is a deficient number, since it is larger than the sum of its proper divisors (195925988157).

499554889923 is a wasteful number, since it uses less digits than its factorization.

499554889923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53663786.

The product of its digits is 1007769600, while the sum is 75.

The spelling of 499554889923 in words is "four hundred ninety-nine billion, five hundred fifty-four million, eight hundred eighty-nine thousand, nine hundred twenty-three".