829639161988 has 96 divisors (see below), whose sum is σ = 1881715404800. Its totient is φ = 310810421376.

The previous prime is 829639161913. The next prime is 829639161997. The reversal of 829639161988 is 889161936928.

It is a super-2 number, since 2×829639161988² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18283993 + ... + 18329311.

Almost surely, 2^829639161988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 829639161988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940857702400).

829639161988 is an abundant number, since it is smaller than the sum of its proper divisors (1052076242812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

829639161988 is a wasteful number, since it uses less digits than its factorization.

829639161988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48009 (or 48007 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 70.

The spelling of 829639161988 in words is "eight hundred twenty-nine billion, six hundred thirty-nine million, one hundred sixty-one thousand, nine hundred eighty-eight".