29720719116 has 36 divisors (see below), whose sum is σ = 81957135624. Its totient is φ = 9006278400.

The previous prime is 29720719111. The next prime is 29720719139. The reversal of 29720719116 is 61191702792.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×29720719116² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29720719111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37525765 + ... + 37526556.

Almost surely, 2^29720719116 is an apocalyptic number.

It is an amenable number.

29720719116 is an abundant number, since it is smaller than the sum of its proper divisors (52236416508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

29720719116 is a wasteful number, since it uses less digits than its factorization.

29720719116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75052342 (or 75052337 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The spelling of 29720719116 in words is "twenty-nine billion, seven hundred twenty million, seven hundred nineteen thousand, one hundred sixteen".