45835511581 has 2 divisors, whose sum is σ = 45835511582. Its totient is φ = 45835511580.

The previous prime is 45835511573. The next prime is 45835511591. The reversal of 45835511581 is 18511553854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30447109081 + 15388402500 = 174491^2 + 124050^2 .

It is a cyclic number.

It is not a de Polignac number, because 45835511581 - 2³ = 45835511573 is a prime.

It is a super-2 number, since 2×45835511581² (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 (45835511591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22917755790 + 22917755791.

It is an arithmetic number, because the mean of its divisors is an integer number (22917755791).

Almost surely, 2^45835511581 is an apocalyptic number.

It is an amenable number.

45835511581 is a deficient number, since it is larger than the sum of its proper divisors (1).

45835511581 is an equidigital number, since it uses as much as digits as its factorization.

45835511581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480000, while the sum is 46.

The spelling of 45835511581 in words is "forty-five billion, eight hundred thirty-five million, five hundred eleven thousand, five hundred eighty-one".