129253213209240 has 96 divisors (see below), whose sum is σ = 420360863036400. Its totient is φ = 34443899308800.

The previous prime is 129253213209233. The next prime is 129253213209257. The reversal of 129253213209240 is 42902312352921.

129253213209240 is a `hidden beast` number, since 1 + 2 + 9 + 2 + 532 + 1 + 3 + 20 + 92 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 122516811 + ... + 123567290.

Almost surely, 2^{129253213209240} is an apocalyptic number.

129253213209240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129253213209240 is an abundant number, since it is smaller than the sum of its proper divisors (291107649827160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129253213209240 is a wasteful number, since it uses less digits than its factorization.

129253213209240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246085577 (or 246085570 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 129253213209240 in words is "one hundred twenty-nine trillion, two hundred fifty-three billion, two hundred thirteen million, two hundred nine thousand, two hundred forty".