82752510121 has 4 divisors (see below), whose sum is σ = 87620304852. Its totient is φ = 77884715392.

The previous prime is 82752510109. The next prime is 82752510131. The reversal of 82752510121 is 12101525728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24669100096 + 58083410025 = 157064^2 + 241005^2 .

It is a cyclic number.

It is not a de Polignac number, because 82752510121 - 2⁷ = 82752509993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82752510131) 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 3 ways as a sum of consecutive naturals, for example, 2433897340 + ... + 2433897373.

It is an arithmetic number, because the mean of its divisors is an integer number (21905076213).

Almost surely, 2^82752510121 is an apocalyptic number.

It is an amenable number.

82752510121 is a deficient number, since it is larger than the sum of its proper divisors (4867794731).

82752510121 is a wasteful number, since it uses less digits than its factorization.

82752510121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867794730.

The product of its (nonzero) digits is 11200, while the sum is 34.

The spelling of 82752510121 in words is "eighty-two billion, seven hundred fifty-two million, five hundred ten thousand, one hundred twenty-one".