129761653 has 24 divisors (see below), whose sum is σ = 159268032. Its totient is φ = 105202944.

The previous prime is 129761651. The next prime is 129761677. The reversal of 129761653 is 356167921.

It is not a de Polignac number, because 129761653 - 2¹ = 129761651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129761651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108726 + ... + 109912.

It is an arithmetic number, because the mean of its divisors is an integer number (6636168).

Almost surely, 2^129761653 is an apocalyptic number.

It is an amenable number.

129761653 is a deficient number, since it is larger than the sum of its proper divisors (29506379).

129761653 is a wasteful number, since it uses less digits than its factorization.

129761653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1314 counting only the distinct ones).

The product of its digits is 68040, while the sum is 40.

The square root of 129761653 is about 11391.2972483383. The cubic root of 129761653 is about 506.2699182734.

The spelling of 129761653 in words is "one hundred twenty-nine million, seven hundred sixty-one thousand, six hundred fifty-three".