20013056700640 has 48 divisors (see below), whose sum is σ = 47281209334128. Its totient is φ = 8005161240576.

The previous prime is 20013056700619. The next prime is 20013056700649. The reversal of 20013056700640 is 4600765031002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20013056700596 and 20013056700605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013056700649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24473419 + ... + 25277941.

It is an arithmetic number, because the mean of its divisors is an integer number (985025194461).

Almost surely, 2^{20013056700640} is an apocalyptic number.

20013056700640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013056700640 is an abundant number, since it is smaller than the sum of its proper divisors (27268152633488).

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

20013056700640 is a wasteful number, since it uses less digits than its factorization.

20013056700640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960011 (or 960003 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 20013056700640 in words is "twenty trillion, thirteen billion, fifty-six million, seven hundred thousand, six hundred forty".