83876721758 has 4 divisors (see below), whose sum is σ = 125815082640. Its totient is φ = 41938360878.

The previous prime is 83876721751. The next prime is 83876721763. The reversal of 83876721758 is 85712767838.

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

It is a super-2 number, since 2×83876721758² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 83876721758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83876721751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20969180438 + ... + 20969180441.

It is an arithmetic number, because the mean of its divisors is an integer number (31453770660).

Almost surely, 2^83876721758 is an apocalyptic number.

83876721758 is a deficient number, since it is larger than the sum of its proper divisors (41938360882).

83876721758 is a wasteful number, since it uses less digits than its factorization.

83876721758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41938360881.

The product of its digits is 31610880, while the sum is 62.

The spelling of 83876721758 in words is "eighty-three billion, eight hundred seventy-six million, seven hundred twenty-one thousand, seven hundred fifty-eight".