29195261312 has 128 divisors (see below), whose sum is σ = 67233291840. Its totient is φ = 12369788928.

The previous prime is 29195261309. The next prime is 29195261363. The reversal of 29195261312 is 21316259192.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×29195261312² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29195261312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34066388 + ... + 34067244.

Almost surely, 2^29195261312 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 29195261312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33616645920).

29195261312 is an abundant number, since it is smaller than the sum of its proper divisors (38038030528).

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

29195261312 is a wasteful number, since it uses less digits than its factorization.

29195261312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1256 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The spelling of 29195261312 in words is "twenty-nine billion, one hundred ninety-five million, two hundred sixty-one thousand, three hundred twelve".