51420165254624 has 24 divisors (see below), whose sum is σ = 103702558892688. Its totient is φ = 25083007440640.

The previous prime is 51420165254581. The next prime is 51420165254629. The reversal of 51420165254624 is 42645256102415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51420165254629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19596098252 + ... + 19596100875.

It is an arithmetic number, because the mean of its divisors is an integer number (4320939953862).

Almost surely, 2^{51420165254624} is an apocalyptic number.

It is an amenable number.

51420165254624 is an abundant number, since it is smaller than the sum of its proper divisors (52282393638064).

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

51420165254624 is a wasteful number, since it uses less digits than its factorization.

51420165254624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39192199178 (or 39192199170 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 47.

The spelling of 51420165254624 in words is "fifty-one trillion, four hundred twenty billion, one hundred sixty-five million, two hundred fifty-four thousand, six hundred twenty-four".