129105250790 has 8 divisors (see below), whose sum is σ = 232389451440. Its totient is φ = 51642100312.

The previous prime is 129105250787. The next prime is 129105250793. The reversal of 129105250790 is 97052501921.

It is an interprime number because it is at equal distance from previous prime (129105250787) and next prime (129105250793).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129105250793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455262530 + ... + 6455262549.

It is an arithmetic number, because the mean of its divisors is an integer number (29048681430).

Almost surely, 2^129105250790 is an apocalyptic number.

129105250790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129105250790 is a deficient number, since it is larger than the sum of its proper divisors (103284200650).

129105250790 is a wasteful number, since it uses less digits than its factorization.

129105250790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12910525086.

The product of its (nonzero) digits is 56700, while the sum is 41.

The spelling of 129105250790 in words is "one hundred twenty-nine billion, one hundred five million, two hundred fifty thousand, seven hundred ninety".