82781372929 has 8 divisors (see below), whose sum is σ = 87457944960. Its totient is φ = 78226270416.

The previous prime is 82781372917. The next prime is 82781372951. The reversal of 82781372929 is 92927318728.

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 82781372929 - 2¹⁹ = 82780848641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82781972929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30365979 + ... + 30368704.

It is an arithmetic number, because the mean of its divisors is an integer number (10932243120).

Almost surely, 2^82781372929 is an apocalyptic number.

It is an amenable number.

82781372929 is a deficient number, since it is larger than the sum of its proper divisors (4676572031).

82781372929 is a wasteful number, since it uses less digits than its factorization.

82781372929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60734759.

The product of its digits is 6096384, while the sum is 58.

The spelling of 82781372929 in words is "eighty-two billion, seven hundred eighty-one million, three hundred seventy-two thousand, nine hundred twenty-nine".