20261321530733 has 8 divisors (see below), whose sum is σ = 20298527785536. Its totient is φ = 20224121299200.

The previous prime is 20261321530721. The next prime is 20261321530777. The reversal of 20261321530733 is 33703512316202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20261321530733 - 2²⁴ = 20261304753517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261321535733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5255885 + ... + 8255117.

It is an arithmetic number, because the mean of its divisors is an integer number (2537315973192).

Almost surely, 2^{20261321530733} is an apocalyptic number.

It is an amenable number.

20261321530733 is a deficient number, since it is larger than the sum of its proper divisors (37206254803).

20261321530733 is a wasteful number, since it uses less digits than its factorization.

20261321530733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011635.

The product of its (nonzero) digits is 136080, while the sum is 38.

Adding to 20261321530733 its reverse (33703512316202), we get a palindrome (53964833846935).

The spelling of 20261321530733 in words is "twenty trillion, two hundred sixty-one billion, three hundred twenty-one million, five hundred thirty thousand, seven hundred thirty-three".