45506858381 has 2 divisors, whose sum is σ = 45506858382. Its totient is φ = 45506858380.

The previous prime is 45506858291. The next prime is 45506858387. The reversal of 45506858381 is 18385860554.

It is a happy number.

45506858381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38116705225 + 7390153156 = 195235^2 + 85966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45506858381 is a prime.

It is a super-2 number, since 2×45506858381² (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 (45506858387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22753429190 + 22753429191.

It is an arithmetic number, because the mean of its divisors is an integer number (22753429191).

Almost surely, 2^45506858381 is an apocalyptic number.

It is an amenable number.

45506858381 is a deficient number, since it is larger than the sum of its proper divisors (1).

45506858381 is an equidigital number, since it uses as much as digits as its factorization.

45506858381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608000, while the sum is 53.

The spelling of 45506858381 in words is "forty-five billion, five hundred six million, eight hundred fifty-eight thousand, three hundred eighty-one".