45936239581 has 2 divisors, whose sum is σ = 45936239582. Its totient is φ = 45936239580.

The previous prime is 45936239579. The next prime is 45936239621. The reversal of 45936239581 is 18593263954.

45936239581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43444732356 + 2491507225 = 208434^2 + 49915^2 .

It is a cyclic number.

It is not a de Polignac number, because 45936239581 - 2¹ = 45936239579 is a prime.

It is a super-2 number, since 2×45936239581² (a number of 22 digits) contains 22 as substring.

Together with 45936239579, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45936239551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22968119790 + 22968119791.

It is an arithmetic number, because the mean of its divisors is an integer number (22968119791).

Almost surely, 2^45936239581 is an apocalyptic number.

It is an amenable number.

45936239581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45936239581 is an equidigital number, since it uses as much as digits as its factorization.

45936239581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 55.

The spelling of 45936239581 in words is "forty-five billion, nine hundred thirty-six million, two hundred thirty-nine thousand, five hundred eighty-one".