51550051511 has 16 divisors (see below), whose sum is σ = 59526165504. Its totient is φ = 43727468544.

The previous prime is 51550051477. The next prime is 51550051523. The reversal of 51550051511 is 11515005515.

It is a happy number.

51550051511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51550051511 - 2¹⁴ = 51550035127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51550051411) 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, 1089335 + ... + 1135671.

It is an arithmetic number, because the mean of its divisors is an integer number (3720385344).

Almost surely, 2^51550051511 is an apocalyptic number.

51550051511 is a deficient number, since it is larger than the sum of its proper divisors (7976113993).

51550051511 is a wasteful number, since it uses less digits than its factorization.

51550051511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47990.

The product of its (nonzero) digits is 3125, while the sum is 29.

The spelling of 51550051511 in words is "fifty-one billion, five hundred fifty million, fifty-one thousand, five hundred eleven".