20232551004553 has 4 divisors (see below), whose sum is σ = 20276439401988. Its totient is φ = 20188662607120.

The previous prime is 20232551004511. The next prime is 20232551004643. The reversal of 20232551004553 is 35540015523202.

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 8115934927104 + 12116616077449 = 2848848^2 + 3480893^2 .

It is a cyclic number.

It is not a de Polignac number, because 20232551004553 - 2¹⁷ = 20232550873481 is a prime.

It is a super-2 number, since 2×20232551004553² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20232551104553) 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, 21944198026 + ... + 21944198947.

It is an arithmetic number, because the mean of its divisors is an integer number (5069109850497).

Almost surely, 2^{20232551004553} is an apocalyptic number.

It is an amenable number.

20232551004553 is a deficient number, since it is larger than the sum of its proper divisors (43888397435).

20232551004553 is an equidigital number, since it uses as much as digits as its factorization.

20232551004553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43888397434.

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 20232551004553 its reverse (35540015523202), we get a palindrome (55772566527755).

The spelling of 20232551004553 in words is "twenty trillion, two hundred thirty-two billion, five hundred fifty-one million, four thousand, five hundred fifty-three".