20501296004 has 72 divisors (see below), whose sum is σ = 42385674240. Its totient is φ = 8649897984.

The previous prime is 20501295953. The next prime is 20501296007. The reversal of 20501296004 is 40069210502.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20501296007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5928644 + ... + 5932100.

It is an arithmetic number, because the mean of its divisors is an integer number (588689920).

Almost surely, 2^20501296004 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 20501296004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21192837120).

20501296004 is an abundant number, since it is smaller than the sum of its proper divisors (21884378236).

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

20501296004 is a wasteful number, since it uses less digits than its factorization.

20501296004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937 (or 3928 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 20501296004 in words is "twenty billion, five hundred one million, two hundred ninety-six thousand, four".