20233542542501 has 4 divisors (see below), whose sum is σ = 21423750927372. Its totient is φ = 19043334157632.

The previous prime is 20233542542489. The next prime is 20233542542531. The reversal of 20233542542501 is 10524524533202.

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 18740881697476 + 1492660845025 = 4329074^2 + 1221745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20233542542501 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 (20233542542531) 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, 595104192410 + ... + 595104192443.

It is an arithmetic number, because the mean of its divisors is an integer number (5355937731843).

Almost surely, 2^{20233542542501} is an apocalyptic number.

It is an amenable number.

20233542542501 is a deficient number, since it is larger than the sum of its proper divisors (1190208384871).

20233542542501 is a wasteful number, since it uses less digits than its factorization.

20233542542501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190208384870.

The product of its (nonzero) digits is 288000, while the sum is 38.

The spelling of 20233542542501 in words is "twenty trillion, two hundred thirty-three billion, five hundred forty-two million, five hundred forty-two thousand, five hundred one".