20429991195696 has 240 divisors, whose sum is σ = 60773514665760. Its totient is φ = 6394537820160.

The previous prime is 20429991195613. The next prime is 20429991195739. The reversal of 20429991195696 is 69659119992402.

20429991195696 is a `hidden beast` number, since 2 + 0 + 4 + 299 + 91 + 195 + 69 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 351176691 + ... + 351234861.

It is an arithmetic number, because the mean of its divisors is an integer number (253222977774).

Almost surely, 2^{20429991195696} 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 20429991195696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30386757332880).

20429991195696 is an abundant number, since it is smaller than the sum of its proper divisors (40343523470064).

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

20429991195696 is a wasteful number, since it uses less digits than its factorization.

20429991195696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60524 (or 60515 counting only the distinct ones).

The product of its (nonzero) digits is 170061120, while the sum is 72.

The spelling of 20429991195696 in words is "twenty trillion, four hundred twenty-nine billion, nine hundred ninety-one million, one hundred ninety-five thousand, six hundred ninety-six".