51053657647 has 16 divisors (see below), whose sum is σ = 54420952320. Its totient is φ = 47755094400.

The previous prime is 51053657597. The next prime is 51053657651. The reversal of 51053657647 is 74675635015.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51053657647 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51053657647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51053657147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2878647 + ... + 2896327.

It is an arithmetic number, because the mean of its divisors is an integer number (3401309520).

Almost surely, 2^51053657647 is an apocalyptic number.

51053657647 is a deficient number, since it is larger than the sum of its proper divisors (3367294673).

51053657647 is a wasteful number, since it uses less digits than its factorization.

51053657647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19614.

The product of its (nonzero) digits is 2646000, while the sum is 49.

The spelling of 51053657647 in words is "fifty-one billion, fifty-three million, six hundred fifty-seven thousand, six hundred forty-seven".