29861971253 has 8 divisors (see below), whose sum is σ = 30172379328. Its totient is φ = 29551957344.

The previous prime is 29861971229. The next prime is 29861971289. The reversal of 29861971253 is 35217916892.

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

It is a cyclic number.

It is not a de Polignac number, because 29861971253 - 2⁶ = 29861971189 is a prime.

It is a super-2 number, since 2×29861971253² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29861971195 and 29861971204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29861971753) 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, 55001 + ... + 250497.

It is an arithmetic number, because the mean of its divisors is an integer number (3771547416).

Almost surely, 2^29861971253 is an apocalyptic number.

It is an amenable number.

29861971253 is a deficient number, since it is larger than the sum of its proper divisors (310408075).

29861971253 is a wasteful number, since it uses less digits than its factorization.

29861971253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197083.

The product of its digits is 1632960, while the sum is 53.

The spelling of 29861971253 in words is "twenty-nine billion, eight hundred sixty-one million, nine hundred seventy-one thousand, two hundred fifty-three".