51051364013 has 12 divisors (see below), whose sum is σ = 55303785108. Its totient is φ = 47104462080.

The previous prime is 51051364003. The next prime is 51051364031. The reversal of 51051364013 is 31046315015.

It can be written as a sum of positive squares in 6 ways, for example, as 8112064489 + 42939299524 = 90067^2 + 207218^2 .

It is not a de Polignac number, because 51051364013 - 2¹⁸ = 51051101869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51051364003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345983 + ... + 470963.

It is an arithmetic number, because the mean of its divisors is an integer number (4608648759).

Almost surely, 2^51051364013 is an apocalyptic number.

It is an amenable number.

51051364013 is a deficient number, since it is larger than the sum of its proper divisors (4252421095).

51051364013 is a wasteful number, since it uses less digits than its factorization.

51051364013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127424 (or 127411 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 51051364013 its reverse (31046315015), we get a palindrome (82097679028).

The spelling of 51051364013 in words is "fifty-one billion, fifty-one million, three hundred sixty-four thousand, thirteen".