29985431558 has 16 divisors (see below), whose sum is σ = 45120801600. Its totient is φ = 14945191296.

The previous prime is 29985431537. The next prime is 29985431603. The reversal of 29985431558 is 85513458992.

It is a super-2 number, since 2×29985431558² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29985431497 and 29985431506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4384910 + ... + 4391742.

It is an arithmetic number, because the mean of its divisors is an integer number (2820050100).

Almost surely, 2^29985431558 is an apocalyptic number.

29985431558 is a deficient number, since it is larger than the sum of its proper divisors (15135370042).

29985431558 is a wasteful number, since it uses less digits than its factorization.

29985431558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13471.

The product of its digits is 15552000, while the sum is 59.

The spelling of 29985431558 in words is "twenty-nine billion, nine hundred eighty-five million, four hundred thirty-one thousand, five hundred fifty-eight".