83970783681 has 8 divisors (see below), whose sum is σ = 113048045760. Its totient is φ = 55437022032.

The previous prime is 83970783641. The next prime is 83970783683. The reversal of 83970783681 is 18638707938.

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

It is not a de Polignac number, because 83970783681 - 2⁷ = 83970783553 is a prime.

It is a super-2 number, since 2×83970783681² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83970783683) 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 7 ways as a sum of consecutive naturals, for example, 135874746 + ... + 135875363.

It is an arithmetic number, because the mean of its divisors is an integer number (14131005720).

Almost surely, 2^83970783681 is an apocalyptic number.

It is an amenable number.

83970783681 is a deficient number, since it is larger than the sum of its proper divisors (29077262079).

83970783681 is a wasteful number, since it uses less digits than its factorization.

83970783681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271750215.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The spelling of 83970783681 in words is "eighty-three billion, nine hundred seventy million, seven hundred eighty-three thousand, six hundred eighty-one".