29536198981 has 4 divisors (see below), whose sum is σ = 29587388812. Its totient is φ = 29485009152.

The previous prime is 29536198897. The next prime is 29536198987. The reversal of 29536198981 is 18989163592.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26468036100 + 3068162881 = 162690^2 + 55391^2 .

It is a cyclic number.

It is not a de Polignac number, because 29536198981 - 2³³ = 20946264389 is a prime.

It is a super-2 number, since 2×29536198981² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29536198987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25594050 + ... + 25595203.

It is an arithmetic number, because the mean of its divisors is an integer number (7396847203).

Almost surely, 2^29536198981 is an apocalyptic number.

It is an amenable number.

29536198981 is a deficient number, since it is larger than the sum of its proper divisors (51189831).

29536198981 is an equidigital number, since it uses as much as digits as its factorization.

29536198981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51189830.

The product of its digits is 8398080, while the sum is 61.

The spelling of 29536198981 in words is "twenty-nine billion, five hundred thirty-six million, one hundred ninety-eight thousand, nine hundred eighty-one".