51708888890251 has 2 divisors, whose sum is σ = 51708888890252. Its totient is φ = 51708888890250.

The previous prime is 51708888890231. The next prime is 51708888890287. The reversal of 51708888890251 is 15209888880715.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51708888890251 - 2¹⁷ = 51708888759179 is a prime.

It is not a weakly prime, because it can be changed into another prime (51708888890231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25854444445125 + 25854444445126.

It is an arithmetic number, because the mean of its divisors is an integer number (25854444445126).

Almost surely, 2^{51708888890251} is an apocalyptic number.

51708888890251 is a deficient number, since it is larger than the sum of its proper divisors (1).

51708888890251 is an equidigital number, since it uses as much as digits as its factorization.

51708888890251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103219200, while the sum is 70.

The spelling of 51708888890251 in words is "fifty-one trillion, seven hundred eight billion, eight hundred eighty-eight million, eight hundred ninety thousand, two hundred fifty-one".