51563640235616 has 48 divisors (see below), whose sum is σ = 102248481323520. Its totient is φ = 25595780073600.

The previous prime is 51563640235573. The next prime is 51563640235649. The reversal of 51563640235616 is 61653204636515.

51563640235616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51563640235616³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266565365 + ... + 266758731.

It is an arithmetic number, because the mean of its divisors is an integer number (2130176694240).

Almost surely, 2^{51563640235616} is an apocalyptic number.

It is an amenable number.

51563640235616 is a deficient number, since it is larger than the sum of its proper divisors (50684841087904).

51563640235616 is a wasteful number, since it uses less digits than its factorization.

51563640235616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253467 (or 253459 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 53.

The spelling of 51563640235616 in words is "fifty-one trillion, five hundred sixty-three billion, six hundred forty million, two hundred thirty-five thousand, six hundred sixteen".