29772522081 has 24 divisors (see below), whose sum is σ = 44846736480. Its totient is φ = 19737434592.

The previous prime is 29772522077. The next prime is 29772522103. The reversal of 29772522081 is 18022527792.

It is not a de Polignac number, because 29772522081 - 2² = 29772522077 is a prime.

It is a super-2 number, since 2×29772522081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29772522001) 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 23 ways as a sum of consecutive naturals, for example, 298740 + ... + 385733.

It is an arithmetic number, because the mean of its divisors is an integer number (1868614020).

Almost surely, 2^29772522081 is an apocalyptic number.

It is an amenable number.

29772522081 is a deficient number, since it is larger than the sum of its proper divisors (15074214399).

29772522081 is an equidigital number, since it uses as much as digits as its factorization.

29772522081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684667 (or 684655 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 29772522081 in words is "twenty-nine billion, seven hundred seventy-two million, five hundred twenty-two thousand, eighty-one".