45233221381 has 2 divisors, whose sum is σ = 45233221382. Its totient is φ = 45233221380.

The previous prime is 45233221343. The next prime is 45233221387. The reversal of 45233221381 is 18312233254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42178890625 + 3054330756 = 205375^2 + 55266^2 .

It is a cyclic number.

It is not a de Polignac number, because 45233221381 - 2¹¹ = 45233219333 is a prime.

It is a super-2 number, since 2×45233221381² (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 (45233221387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22616610690 + 22616610691.

It is an arithmetic number, because the mean of its divisors is an integer number (22616610691).

Almost surely, 2^45233221381 is an apocalyptic number.

It is an amenable number.

45233221381 is a deficient number, since it is larger than the sum of its proper divisors (1).

45233221381 is an equidigital number, since it uses as much as digits as its factorization.

45233221381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 34.

The spelling of 45233221381 in words is "forty-five billion, two hundred thirty-three million, two hundred twenty-one thousand, three hundred eighty-one".