20551352110999 has 2 divisors, whose sum is σ = 20551352111000. Its totient is φ = 20551352110998.

The previous prime is 20551352110963. The next prime is 20551352111009. The reversal of 20551352110999 is 99901125315502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20551352110999 - 2²³ = 20551343722391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20551352110909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10275676055499 + 10275676055500.

It is an arithmetic number, because the mean of its divisors is an integer number (10275676055500).

Almost surely, 2^{20551352110999} is an apocalyptic number.

20551352110999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20551352110999 is an equidigital number, since it uses as much as digits as its factorization.

20551352110999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1093500, while the sum is 52.

The spelling of 20551352110999 in words is "twenty trillion, five hundred fifty-one billion, three hundred fifty-two million, one hundred ten thousand, nine hundred ninety-nine".