45010543021 has 4 divisors (see below), whose sum is σ = 45012274812. Its totient is φ = 45008811232.

The previous prime is 45010543003. The next prime is 45010543027. The reversal of 45010543021 is 12034501054.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25030720521 + 19979822500 = 158211^2 + 141350^2 .

It is a cyclic number.

It is not a de Polignac number, because 45010543021 - 2¹⁹ = 45010018733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45010543027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826306 + ... + 879091.

It is an arithmetic number, because the mean of its divisors is an integer number (11253068703).

Almost surely, 2^45010543021 is an apocalyptic number.

It is an amenable number.

45010543021 is a deficient number, since it is larger than the sum of its proper divisors (1731791).

45010543021 is a wasteful number, since it uses less digits than its factorization.

45010543021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731790.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 45010543021 in words is "forty-five billion, ten million, five hundred forty-three thousand, twenty-one".