51400561666848 has 48 divisors (see below), whose sum is σ = 134926874863200. Its totient is φ = 17133469700096.

The previous prime is 51400561666843. The next prime is 51400561666849. The reversal of 51400561666848 is 84866616500415.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 51400561666791 and 51400561666800.

It is not an unprimeable number, because it can be changed into a prime (51400561666843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45987328 + ... + 47091776.

It is an arithmetic number, because the mean of its divisors is an integer number (2810976559650).

Almost surely, 2^{51400561666848} is an apocalyptic number.

It is an amenable number.

51400561666848 is an abundant number, since it is smaller than the sum of its proper divisors (83526313196352).

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

51400561666848 is a wasteful number, since it uses less digits than its factorization.

51400561666848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589249 (or 1589241 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 60.

The spelling of 51400561666848 in words is "fifty-one trillion, four hundred billion, five hundred sixty-one million, six hundred sixty-six thousand, eight hundred forty-eight".