45112711721155 has 32 divisors (see below), whose sum is σ = 58388105059200. Its totient is φ = 33263399626752.

The previous prime is 45112711721131. The next prime is 45112711721159. The reversal of 45112711721155 is 55112711721154.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 45112711721155 - 2⁷ = 45112711721027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45112711721159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168324717 + ... + 168592513.

It is an arithmetic number, because the mean of its divisors is an integer number (1824628283100).

Almost surely, 2^{45112711721155} is an apocalyptic number.

45112711721155 is a deficient number, since it is larger than the sum of its proper divisors (13275393338045).

45112711721155 is a wasteful number, since it uses less digits than its factorization.

45112711721155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271743.

The product of its digits is 98000, while the sum is 43.

Subtracting 45112711721155 from its reverse (55112711721154), we obtain a palindrome (9999999999999).

The spelling of 45112711721155 in words is "forty-five trillion, one hundred twelve billion, seven hundred eleven million, seven hundred twenty-one thousand, one hundred fifty-five".