53521045645 has 8 divisors (see below), whose sum is σ = 64584056160. Its totient is φ = 42577635600.

The previous prime is 53521045621. The next prime is 53521045667. The reversal of 53521045645 is 54654012535.

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

It is a de Polignac number, because none of the positive numbers 2^k-53521045645 is a prime.

It is a super-3 number, since 3×53521045645³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53521045598 and 53521045607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29899131 + ... + 29900920.

It is an arithmetic number, because the mean of its divisors is an integer number (8073007020).

Almost surely, 2^53521045645 is an apocalyptic number.

It is an amenable number.

53521045645 is a deficient number, since it is larger than the sum of its proper divisors (11063010515).

53521045645 is a wasteful number, since it uses less digits than its factorization.

53521045645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59800235.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 53521045645 in words is "fifty-three billion, five hundred twenty-one million, forty-five thousand, six hundred forty-five".