20571900089741 has 72 divisors (see below), whose sum is σ = 28861713585432. Its totient is φ = 14517780076800.

The previous prime is 20571900089737. The next prime is 20571900089753. The reversal of 20571900089741 is 14798000917502.

It can be written as a sum of positive squares in 4 ways, for example, as 2443763068516 + 18128137021225 = 1563254^2 + 4257715^2 .

It is not a de Polignac number, because 20571900089741 - 2² = 20571900089737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20571900089701) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1567151 + ... + 6603011.

It is an arithmetic number, because the mean of its divisors is an integer number (400857133131).

Almost surely, 2^{20571900089741} is an apocalyptic number.

It is an amenable number.

20571900089741 is a deficient number, since it is larger than the sum of its proper divisors (8289813495691).

20571900089741 is a wasteful number, since it uses less digits than its factorization.

20571900089741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5035963 (or 5035945 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 20571900089741 in words is "twenty trillion, five hundred seventy-one billion, nine hundred million, eighty-nine thousand, seven hundred forty-one".