45513523021 has 8 divisors (see below), whose sum is σ = 47516987520. Its totient is φ = 43512109872.

The previous prime is 45513523009. The next prime is 45513523063. The reversal of 45513523021 is 12032531554.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45513523021 - 2¹³ = 45513514829 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 (45513523091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467401 + ... + 556318.

It is an arithmetic number, because the mean of its divisors is an integer number (5939623440).

Almost surely, 2^45513523021 is an apocalyptic number.

It is an amenable number.

45513523021 is a deficient number, since it is larger than the sum of its proper divisors (2003464499).

45513523021 is a wasteful number, since it uses less digits than its factorization.

45513523021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025675.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 45513523021 in words is "forty-five billion, five hundred thirteen million, five hundred twenty-three thousand, twenty-one".