129533198090 has 16 divisors (see below), whose sum is σ = 233452317672. Its totient is φ = 51748265664.

The previous prime is 129533198059. The next prime is 129533198107. The reversal of 129533198090 is 90891335921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 100450329721 + 29082868369 = 316939^2 + 170537^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8118329 + ... + 8134268.

Almost surely, 2^129533198090 is an apocalyptic number.

129533198090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129533198090 is a deficient number, since it is larger than the sum of its proper divisors (103919119582).

129533198090 is a wasteful number, since it uses less digits than its factorization.

129533198090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16253401.

The product of its (nonzero) digits is 524880, while the sum is 50.

The spelling of 129533198090 in words is "one hundred twenty-nine billion, five hundred thirty-three million, one hundred ninety-eight thousand, ninety".