29991984098 has 32 divisors (see below), whose sum is σ = 47047150080. Its totient is φ = 14322631680.

The previous prime is 29991984097. The next prime is 29991984109. The reversal of 29991984098 is 89048919992.

It is a super-2 number, since 2×29991984098² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29991984097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6260288 + ... + 6265076.

It is an arithmetic number, because the mean of its divisors is an integer number (1470223440).

Almost surely, 2^29991984098 is an apocalyptic number.

29991984098 is a deficient number, since it is larger than the sum of its proper divisors (17055165982).

29991984098 is a wasteful number, since it uses less digits than its factorization.

29991984098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122.

The product of its (nonzero) digits is 30233088, while the sum is 68.

The spelling of 29991984098 in words is "twenty-nine billion, nine hundred ninety-one million, nine hundred eighty-four thousand, ninety-eight".