53643531306645 has 96 divisors (see below), whose sum is σ = 110889793497600. Its totient is φ = 23455644360192.

The previous prime is 53643531306611. The next prime is 53643531306679. The reversal of 53643531306645 is 54660313534635.

53643531306645 is a `hidden beast` number, since 5 + 3 + 6 + 4 + 3 + 531 + 3 + 0 + 66 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (53643531306611) and next prime (53643531306679).

It is not a de Polignac number, because 53643531306645 - 2⁷ = 53643531306517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53643531306591 and 53643531306600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 208447711 + ... + 208704899.

It is an arithmetic number, because the mean of its divisors is an integer number (1155102015600).

Almost surely, 2^{53643531306645} is an apocalyptic number.

It is an amenable number.

53643531306645 is an abundant number, since it is smaller than the sum of its proper divisors (57246262190955).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53643531306645 is a wasteful number, since it uses less digits than its factorization.

53643531306645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286019 (or 286016 counting only the distinct ones).

The product of its (nonzero) digits is 34992000, while the sum is 54.

The spelling of 53643531306645 in words is "fifty-three trillion, six hundred forty-three billion, five hundred thirty-one million, three hundred six thousand, six hundred forty-five".