82991418123 has 8 divisors (see below), whose sum is σ = 112213748736. Its totient is φ = 54548349800.

The previous prime is 82991418101. The next prime is 82991418157. The reversal of 82991418123 is 32181419928.

It is a happy number.

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 82991418123 - 2⁹ = 82991417611 is a prime.

It is a super-2 number, since 2×82991418123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82991410123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194815323 + ... + 194815748.

It is an arithmetic number, because the mean of its divisors is an integer number (14026718592).

Almost surely, 2^82991418123 is an apocalyptic number.

82991418123 is a deficient number, since it is larger than the sum of its proper divisors (29222330613).

82991418123 is a wasteful number, since it uses less digits than its factorization.

82991418123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389631145.

The product of its digits is 248832, while the sum is 48.

The spelling of 82991418123 in words is "eighty-two billion, nine hundred ninety-one million, four hundred eighteen thousand, one hundred twenty-three".