829639161961 has 8 divisors (see below), whose sum is σ = 870190819200. Its totient is φ = 790041661488.

The previous prime is 829639161913. The next prime is 829639161997. The reversal of 829639161961 is 169161936928.

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 829639161961 - 2⁷ = 829639161833 is a prime.

It is a super-2 number, since 2×829639161961² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 829639161961.

It is not an unprimeable number, because it can be changed into a prime (829639161061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238537411 + ... + 238540888.

It is an arithmetic number, because the mean of its divisors is an integer number (108773852400).

Almost surely, 2^829639161961 is an apocalyptic number.

It is an amenable number.

829639161961 is a deficient number, since it is larger than the sum of its proper divisors (40551657239).

829639161961 is a wasteful number, since it uses less digits than its factorization.

829639161961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477078383.

The product of its digits is 7558272, while the sum is 61.

The spelling of 829639161961 in words is "eight hundred twenty-nine billion, six hundred thirty-nine million, one hundred sixty-one thousand, nine hundred sixty-one".