129849624894 has 16 divisors (see below), whose sum is σ = 283308272640. Its totient is φ = 39348371160.

The previous prime is 129849624889. The next prime is 129849624911. The reversal of 129849624894 is 498426948921.

It is a happy number.

It is a super-2 number, since 2×129849624894² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 1967418559 = 129849624894 / (1 + 2 + 9 + 8 + 4 + 9 + 6 + 2 + 4 + 8 + 9 + 4).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 983709214 + ... + 983709345.

It is an arithmetic number, because the mean of its divisors is an integer number (17706767040).

Almost surely, 2^129849624894 is an apocalyptic number.

129849624894 is an abundant number, since it is smaller than the sum of its proper divisors (153458647746).

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

129849624894 is a wasteful number, since it uses less digits than its factorization.

129849624894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967418575.

The product of its digits is 71663616, while the sum is 66.

The spelling of 129849624894 in words is "one hundred twenty-nine billion, eight hundred forty-nine million, six hundred twenty-four thousand, eight hundred ninety-four".