129461762605 has 16 divisors (see below), whose sum is σ = 179206888320. Its totient is φ = 87944116032.

The previous prime is 129461762581. The next prime is 129461762611. The reversal of 129461762605 is 506267164921.

It is a cyclic number.

It is not a de Polignac number, because 129461762605 - 2⁷ = 129461762477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17280870 + ... + 17288359.

It is an arithmetic number, because the mean of its divisors is an integer number (11200430520).

Almost surely, 2^129461762605 is an apocalyptic number.

It is an amenable number.

129461762605 is a deficient number, since it is larger than the sum of its proper divisors (49745125715).

129461762605 is a wasteful number, since it uses less digits than its factorization.

129461762605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34569348.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 129461762605 in words is "one hundred twenty-nine billion, four hundred sixty-one million, seven hundred sixty-two thousand, six hundred five".