20013056700641 has 4 divisors (see below), whose sum is σ = 20034056761092. Its totient is φ = 19992056640192.

The previous prime is 20013056700619. The next prime is 20013056700649. The reversal of 20013056700641 is 14600765031002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8071394640400 + 11941662060241 = 2841020^2 + 3455671^2 .

It is a cyclic number.

It is not a de Polignac number, because 20013056700641 - 2¹⁸ = 20013056438497 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10500028796 + ... + 10500030701.

It is an arithmetic number, because the mean of its divisors is an integer number (5008514190273).

Almost surely, 2^{20013056700641} is an apocalyptic number.

It is an amenable number.

20013056700641 is a deficient number, since it is larger than the sum of its proper divisors (21000060451).

20013056700641 is an equidigital number, since it uses as much as digits as its factorization.

20013056700641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21000060450.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 20013056700641 in words is "twenty trillion, thirteen billion, fifty-six million, seven hundred thousand, six hundred forty-one".