51920963247 has 16 divisors (see below), whose sum is σ = 71621239680. Its totient is φ = 33417535200.

The previous prime is 51920963231. The next prime is 51920963251. The reversal of 51920963247 is 74236902915.

It is not a de Polignac number, because 51920963247 - 2⁴ = 51920963231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51920963196 and 51920963205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51920963267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1567972 + ... + 1600742.

It is an arithmetic number, because the mean of its divisors is an integer number (4476327480).

Almost surely, 2^51920963247 is an apocalyptic number.

51920963247 is a deficient number, since it is larger than the sum of its proper divisors (19700276433).

51920963247 is a wasteful number, since it uses less digits than its factorization.

51920963247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51014.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 51920963247 in words is "fifty-one billion, nine hundred twenty million, nine hundred sixty-three thousand, two hundred forty-seven".