45213706381 has 2 divisors, whose sum is σ = 45213706382. Its totient is φ = 45213706380.

The previous prime is 45213706319. The next prime is 45213706399. The reversal of 45213706381 is 18360731254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28652332900 + 16561373481 = 169270^2 + 128691^2 .

It is a cyclic number.

It is not a de Polignac number, because 45213706381 - 2⁷ = 45213706253 is a prime.

It is a super-2 number, since 2×45213706381² (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 (45213706301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22606853190 + 22606853191.

It is an arithmetic number, because the mean of its divisors is an integer number (22606853191).

Almost surely, 2^45213706381 is an apocalyptic number.

It is an amenable number.

45213706381 is a deficient number, since it is larger than the sum of its proper divisors (1).

45213706381 is an equidigital number, since it uses as much as digits as its factorization.

45213706381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 45213706381 in words is "forty-five billion, two hundred thirteen million, seven hundred six thousand, three hundred eighty-one".