51140220305311 has 8 divisors (see below), whose sum is σ = 52387693326864. Its totient is φ = 49892754454080.

The previous prime is 51140220305309. The next prime is 51140220305329. The reversal of 51140220305311 is 11350302204115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51140220305311 - 2¹ = 51140220305309 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 51140220305311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51140220303311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14410576 + ... + 17605258.

It is an arithmetic number, because the mean of its divisors is an integer number (6548461665858).

Almost surely, 2^{51140220305311} is an apocalyptic number.

51140220305311 is a deficient number, since it is larger than the sum of its proper divisors (1247473021553).

51140220305311 is a wasteful number, since it uses less digits than its factorization.

51140220305311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585161.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 51140220305311 its reverse (11350302204115), we get a palindrome (62490522509426).

The spelling of 51140220305311 in words is "fifty-one trillion, one hundred forty billion, two hundred twenty million, three hundred five thousand, three hundred eleven".