29997506317850 has 48 divisors (see below), whose sum is σ = 55961682865920. Its totient is φ = 11963279222400.

The previous prime is 29997506317679. The next prime is 29997506317859. The reversal of 29997506317850 is 5871360579992.

It is not an unprimeable number, because it can be changed into a prime (29997506317859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26338190 + ... + 27453510.

It is an arithmetic number, because the mean of its divisors is an integer number (1165868393040).

Almost surely, 2^{29997506317850} is an apocalyptic number.

29997506317850 is a deficient number, since it is larger than the sum of its proper divisors (25964176548070).

29997506317850 is a wasteful number, since it uses less digits than its factorization.

29997506317850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116935 (or 1116930 counting only the distinct ones).

The product of its (nonzero) digits is 257191200, while the sum is 71.

The spelling of 29997506317850 in words is "twenty-nine trillion, nine hundred ninety-seven billion, five hundred six million, three hundred seventeen thousand, eight hundred fifty".