51905390537355 has 16 divisors (see below), whose sum is σ = 83049174591264. Its totient is φ = 27682691709440.

The previous prime is 51905390537353. The next prime is 51905390537369. The reversal of 51905390537355 is 55373509350915.

It is not a de Polignac number, because 51905390537355 - 2¹ = 51905390537353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51905390537353) 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, 9095484 + ... + 13657913.

It is an arithmetic number, because the mean of its divisors is an integer number (5190573411954).

Almost surely, 2^{51905390537355} is an apocalyptic number.

51905390537355 is a deficient number, since it is larger than the sum of its proper divisors (31143784053909).

51905390537355 is a wasteful number, since it uses less digits than its factorization.

51905390537355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22905486.

The product of its (nonzero) digits is 47840625, while the sum is 60.

The spelling of 51905390537355 in words is "fifty-one trillion, nine hundred five billion, three hundred ninety million, five hundred thirty-seven thousand, three hundred fifty-five".