83121558883087 has 8 divisors (see below), whose sum is σ = 90057831239376. Its totient is φ = 76412705292672.

The previous prime is 83121558883063. The next prime is 83121558883091. The reversal of 83121558883087 is 78038885512138.

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

It is a de Polignac number, because none of the positive numbers 2^k-83121558883087 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 (83121558883007) 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, 56854690708 + ... + 56854692169.

It is an arithmetic number, because the mean of its divisors is an integer number (11257228904922).

Almost surely, 2^{83121558883087} is an apocalyptic number.

83121558883087 is a deficient number, since it is larger than the sum of its proper divisors (6936272356289).

83121558883087 is a wasteful number, since it uses less digits than its factorization.

83121558883087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113709382937.

The product of its (nonzero) digits is 103219200, while the sum is 67.

The spelling of 83121558883087 in words is "eighty-three trillion, one hundred twenty-one billion, five hundred fifty-eight million, eight hundred eighty-three thousand, eighty-seven".