29871434621953 has 8 divisors (see below), whose sum is σ = 30656424902400. Its totient is φ = 29095734167568.

The previous prime is 29871434621933. The next prime is 29871434622013. The reversal of 29871434621953 is 35912643417892.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29871434621953 is a prime.

It is a super-2 number, since 2×29871434621953² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29871434621923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2322450001 + ... + 2322462862.

It is an arithmetic number, because the mean of its divisors is an integer number (3832053112800).

Almost surely, 2^{29871434621953} is an apocalyptic number.

It is an amenable number.

29871434621953 is a deficient number, since it is larger than the sum of its proper divisors (784990280447).

29871434621953 is a wasteful number, since it uses less digits than its factorization.

29871434621953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644913031.

The product of its digits is 78382080, while the sum is 64.

The spelling of 29871434621953 in words is "twenty-nine trillion, eight hundred seventy-one billion, four hundred thirty-four million, six hundred twenty-one thousand, nine hundred fifty-three".