29261238012 has 120 divisors (see below), whose sum is σ = 78485066352. Its totient is φ = 9500716800.

The previous prime is 29261238011. The next prime is 29261238029. The reversal of 29261238012 is 21083216292.

It is a happy number.

29261238012 is a `hidden beast` number, since 2 + 9 + 2 + 612 + 38 + 0 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29261238011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10904823 + ... + 10907505.

Almost surely, 2^29261238012 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 29261238012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39242533176).

29261238012 is an abundant number, since it is smaller than the sum of its proper divisors (49223828340).

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

29261238012 is a wasteful number, since it uses less digits than its factorization.

29261238012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 29261238012 in words is "twenty-nine billion, two hundred sixty-one million, two hundred thirty-eight thousand, twelve".