129401650541 has 2 divisors, whose sum is σ = 129401650542. Its totient is φ = 129401650540.

The previous prime is 129401650519. The next prime is 129401650597. The reversal of 129401650541 is 145056104921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77365197316 + 52036453225 = 278146^2 + 228115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129401650541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129401650495 and 129401650504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129401650501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64700825270 + 64700825271.

It is an arithmetic number, because the mean of its divisors is an integer number (64700825271).

Almost surely, 2^129401650541 is an apocalyptic number.

It is an amenable number.

129401650541 is a deficient number, since it is larger than the sum of its proper divisors (1).

129401650541 is an equidigital number, since it uses as much as digits as its factorization.

129401650541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The spelling of 129401650541 in words is "one hundred twenty-nine billion, four hundred one million, six hundred fifty thousand, five hundred forty-one".