51010011513 has 24 divisors (see below), whose sum is σ = 75375797640. Its totient is φ = 33233068800.

The previous prime is 51010011511. The next prime is 51010011529. The reversal of 51010011513 is 31511001015.

51010011513 is a `hidden beast` number, since 51 + 0 + 100 + 1 + 1 + 513 = 666.

51010011513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5354287929 + 45655723584 = 73173^2 + 213672^2 .

It is not a de Polignac number, because 51010011513 - 2¹ = 51010011511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51010011511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284538 + ... + 427763.

It is an arithmetic number, because the mean of its divisors is an integer number (3140658235).

Almost surely, 2^51010011513 is an apocalyptic number.

It is an amenable number.

51010011513 is a deficient number, since it is larger than the sum of its proper divisors (24365786127).

51010011513 is a wasteful number, since it uses less digits than its factorization.

51010011513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712489 (or 712486 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 18.

Adding to 51010011513 its reverse (31511001015), we get a palindrome (82521012528).

The spelling of 51010011513 in words is "fifty-one billion, ten million, eleven thousand, five hundred thirteen".