83732379505 has 8 divisors (see below), whose sum is σ = 100490826600. Its totient is φ = 66977922816.

The previous prime is 83732379491. The next prime is 83732379529. The reversal of 83732379505 is 50597323738.

It can be written as a sum of positive squares in 4 ways, for example, as 8597183841 + 75135195664 = 92721^2 + 274108^2 .

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 83732379505 - 2⁹ = 83732378993 is a prime.

It is a super-2 number, since 2×83732379505² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951240 + ... + 1035529.

It is an arithmetic number, because the mean of its divisors is an integer number (12561353325).

Almost surely, 2^83732379505 is an apocalyptic number.

It is an amenable number.

83732379505 is a deficient number, since it is larger than the sum of its proper divisors (16758447095).

83732379505 is a wasteful number, since it uses less digits than its factorization.

83732379505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995203.

The product of its (nonzero) digits is 4762800, while the sum is 52.

The spelling of 83732379505 in words is "eighty-three billion, seven hundred thirty-two million, three hundred seventy-nine thousand, five hundred five".