51055051520009 has 2 divisors, whose sum is σ = 51055051520010. Its totient is φ = 51055051520008.

The previous prime is 51055051519991. The next prime is 51055051520051. The reversal of 51055051520009 is 90002515055015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42174633640000 + 8880417880009 = 6494200^2 + 2980003^2 .

It is a cyclic number.

It is not a de Polignac number, because 51055051520009 - 2²⁰ = 51055050471433 is a prime.

It is not a weakly prime, because it can be changed into another prime (51055051520059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25527525760004 + 25527525760005.

It is an arithmetic number, because the mean of its divisors is an integer number (25527525760005).

Almost surely, 2^{51055051520009} is an apocalyptic number.

It is an amenable number.

51055051520009 is a deficient number, since it is larger than the sum of its proper divisors (1).

51055051520009 is an equidigital number, since it uses as much as digits as its factorization.

51055051520009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56250, while the sum is 38.

The spelling of 51055051520009 in words is "fifty-one trillion, fifty-five billion, fifty-one million, five hundred twenty thousand, nine".