129245074506 has 12 divisors (see below), whose sum is σ = 280030994802. Its totient is φ = 43081691496.

The previous prime is 129245074489. The next prime is 129245074549. The reversal of 129245074506 is 605470542921.

129245074506 is a `hidden beast` number, since 1 + 2 + 9 + 24 + 50 + 74 + 506 = 666.

It can be written as a sum of positive squares in only one way, i.e., 127549693881 + 1695380625 = 357141^2 + 41175^2 .

It is a super-2 number, since 2×129245074506² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3590140941 + ... + 3590140976.

Almost surely, 2^129245074506 is an apocalyptic number.

129245074506 is an abundant number, since it is smaller than the sum of its proper divisors (150785920296).

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

129245074506 is a wasteful number, since it uses less digits than its factorization.

129245074506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180281925 (or 7180281922 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 129245074506 in words is "one hundred twenty-nine billion, two hundred forty-five million, seventy-four thousand, five hundred six".