45111012512721 has 64 divisors (see below), whose sum is σ = 64473431500800. Its totient is φ = 27970618553856.

The previous prime is 45111012512701. The next prime is 45111012512767. The reversal of 45111012512721 is 12721521011154.

It is a happy number.

It is not a de Polignac number, because 45111012512721 - 2¹⁹ = 45111011988433 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45111012512701) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11635544235 + ... + 11635548111.

It is an arithmetic number, because the mean of its divisors is an integer number (1007397367200).

Almost surely, 2^{45111012512721} is an apocalyptic number.

It is an amenable number.

45111012512721 is a deficient number, since it is larger than the sum of its proper divisors (19362418988079).

45111012512721 is a wasteful number, since it uses less digits than its factorization.

45111012512721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718.

The product of its (nonzero) digits is 5600, while the sum is 33.

Adding to 45111012512721 its reverse (12721521011154), we get a palindrome (57832533523875).

The spelling of 45111012512721 in words is "forty-five trillion, one hundred eleven billion, twelve million, five hundred twelve thousand, seven hundred twenty-one".