83261513217018 has 8 divisors (see below), whose sum is σ = 166523026434048. Its totient is φ = 27753837739004.

The previous prime is 83261513217011. The next prime is 83261513217019. The reversal of 83261513217018 is 81071231516238.

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

83261513217018 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (83261513217011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6938459434746 + ... + 6938459434757.

It is an arithmetic number, because the mean of its divisors is an integer number (20815378304256).

Almost surely, 2^{83261513217018} is an apocalyptic number.

83261513217018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83261513217018 is a wasteful number, since it uses less digits than its factorization.

83261513217018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13876918869508.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 83261513217018 in words is "eighty-three trillion, two hundred sixty-one billion, five hundred thirteen million, two hundred seventeen thousand, eighteen".