29997934171505 has 32 divisors (see below), whose sum is σ = 37522021754880. Its totient is φ = 22997180989440.

The previous prime is 29997934171453. The next prime is 29997934171507. The reversal of 29997934171505 is 50517143979992.

It is not a de Polignac number, because 29997934171505 - 2⁶ = 29997934171441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29997934171507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274367729 + ... + 274477041.

It is an arithmetic number, because the mean of its divisors is an integer number (1172563179840).

Almost surely, 2^{29997934171505} is an apocalyptic number.

It is an amenable number.

29997934171505 is a deficient number, since it is larger than the sum of its proper divisors (7524087583375).

29997934171505 is a wasteful number, since it uses less digits than its factorization.

29997934171505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126641.

The product of its (nonzero) digits is 192893400, while the sum is 71.

The spelling of 29997934171505 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred thirty-four million, one hundred seventy-one thousand, five hundred five".