51604135157 has 2 divisors, whose sum is σ = 51604135158. Its totient is φ = 51604135156.

The previous prime is 51604135133. The next prime is 51604135199. The reversal of 51604135157 is 75153140615.

It is a happy number.

51604135157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32474202436 + 19129932721 = 180206^2 + 138311^2 .

It is a cyclic number.

It is not a de Polignac number, because 51604135157 - 2¹⁴ = 51604118773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51604135157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51604135117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25802067578 + 25802067579.

It is an arithmetic number, because the mean of its divisors is an integer number (25802067579).

Almost surely, 2^51604135157 is an apocalyptic number.

It is an amenable number.

51604135157 is a deficient number, since it is larger than the sum of its proper divisors (1).

51604135157 is an equidigital number, since it uses as much as digits as its factorization.

51604135157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 51604135157 in words is "fifty-one billion, six hundred four million, one hundred thirty-five thousand, one hundred fifty-seven".