45210555405 has 20 divisors (see below), whose sum is σ = 81044107452. Its totient is φ = 24112296000.

The previous prime is 45210555389. The next prime is 45210555407. The reversal of 45210555405 is 50455501254.

45210555405 is a `hidden beast` number, since 4 + 5 + 2 + 105 + 5 + 540 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14781939561 + 30428615844 = 121581^2 + 174438^2 .

It is not a de Polignac number, because 45210555405 - 2⁴ = 45210555389 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 45210555405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45210555407) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 55815096 + ... + 55815905.

Almost surely, 2^45210555405 is an apocalyptic number.

45210555405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45210555405 is a deficient number, since it is larger than the sum of its proper divisors (35833552047).

45210555405 is a wasteful number, since it uses less digits than its factorization.

45210555405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111631018 (or 111631009 counting only the distinct ones).

The product of its (nonzero) digits is 100000, while the sum is 36.

The spelling of 45210555405 in words is "forty-five billion, two hundred ten million, five hundred fifty-five thousand, four hundred five".