45216545765 has 4 divisors (see below), whose sum is σ = 54259854924. Its totient is φ = 36173236608.

The previous prime is 45216545713. The next prime is 45216545783. The reversal of 45216545765 is 56754561254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56754561254 = 2 ⋅28377280627.

It can be written as a sum of positive squares in 2 ways, for example, as 30477128929 + 14739416836 = 174577^2 + 121406^2 .

It is a cyclic number.

It is not a de Polignac number, because 45216545765 - 2¹⁰ = 45216544741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4521654572 + ... + 4521654581.

It is an arithmetic number, because the mean of its divisors is an integer number (13564963731).

Almost surely, 2^45216545765 is an apocalyptic number.

It is an amenable number.

45216545765 is a deficient number, since it is larger than the sum of its proper divisors (9043309159).

45216545765 is an equidigital number, since it uses as much as digits as its factorization.

45216545765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9043309158.

The product of its digits is 5040000, while the sum is 50.

The spelling of 45216545765 in words is "forty-five billion, two hundred sixteen million, five hundred forty-five thousand, seven hundred sixty-five".