51730263821845 has 32 divisors (see below), whose sum is σ = 71689484176128. Its totient is φ = 35099759904768.

The previous prime is 51730263821809. The next prime is 51730263821881. The reversal of 51730263821845 is 54812836203715.

It is an interprime number because it is at equal distance from previous prime (51730263821809) and next prime (51730263821881).

It is a cyclic number.

It is not a de Polignac number, because 51730263821845 - 2¹³ = 51730263813653 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16288119 + ... + 19203211.

It is an arithmetic number, because the mean of its divisors is an integer number (2240296380504).

Almost surely, 2^{51730263821845} is an apocalyptic number.

It is an amenable number.

51730263821845 is a deficient number, since it is larger than the sum of its proper divisors (19959220354283).

51730263821845 is a wasteful number, since it uses less digits than its factorization.

51730263821845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920429.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 51730263821845 in words is "fifty-one trillion, seven hundred thirty billion, two hundred sixty-three million, eight hundred twenty-one thousand, eight hundred forty-five".