129663357 has 8 divisors (see below), whose sum is σ = 172937184. Its totient is φ = 86415888.

The previous prime is 129663343. The next prime is 129663367. The reversal of 129663357 is 753366921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129663357 - 2⁶ = 129663293 is a prime.

It is a super-2 number, since 2×129663357² = 33625172297018898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129663367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14983 + ... + 21995.

It is an arithmetic number, because the mean of its divisors is an integer number (21617148).

Almost surely, 2^129663357 is an apocalyptic number.

It is an amenable number.

129663357 is a deficient number, since it is larger than the sum of its proper divisors (43273827).

129663357 is an equidigital number, since it uses as much as digits as its factorization.

129663357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13179.

The product of its digits is 204120, while the sum is 42.

The square root of 129663357 is about 11386.9819091803. The cubic root of 129663357 is about 506.1420508135.

The spelling of 129663357 in words is "one hundred twenty-nine million, six hundred sixty-three thousand, three hundred fifty-seven".