23336554981 has 2 divisors, whose sum is σ = 23336554982. Its totient is φ = 23336554980.

The previous prime is 23336554963. The next prime is 23336555059. The reversal of 23336554981 is 18945563332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22288997025 + 1047557956 = 149295^2 + 32366^2 .

It is a cyclic number.

It is not a de Polignac number, because 23336554981 - 2¹¹ = 23336552933 is a prime.

It is a super-2 number, since 2×23336554981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23336554931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11668277490 + 11668277491.

It is an arithmetic number, because the mean of its divisors is an integer number (11668277491).

Almost surely, 2^23336554981 is an apocalyptic number.

It is an amenable number.

23336554981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23336554981 is an equidigital number, since it uses as much as digits as its factorization.

23336554981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 49.

The spelling of 23336554981 in words is "twenty-three billion, three hundred thirty-six million, five hundred fifty-four thousand, nine hundred eighty-one".