129851458023457 has 2 divisors, whose sum is σ = 129851458023458. Its totient is φ = 129851458023456.

The previous prime is 129851458023337. The next prime is 129851458023461. The reversal of 129851458023457 is 754320854158921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72626938356736 + 57224519666721 = 8522144^2 + 7564689^2 .

It is a cyclic number.

It is not a de Polignac number, because 129851458023457 - 2¹⁵ = 129851457990689 is a prime.

It is a super-2 number, since 2×129851458023457² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129851458023487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64925729011728 + 64925729011729.

It is an arithmetic number, because the mean of its divisors is an integer number (64925729011729).

Almost surely, 2^{129851458023457} is an apocalyptic number.

It is an amenable number.

129851458023457 is a deficient number, since it is larger than the sum of its proper divisors (1).

129851458023457 is an equidigital number, since it uses as much as digits as its factorization.

129851458023457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768000, while the sum is 64.

The spelling of 129851458023457 in words is "one hundred twenty-nine trillion, eight hundred fifty-one billion, four hundred fifty-eight million, twenty-three thousand, four hundred fifty-seven".