29997558330872 has 32 divisors (see below), whose sum is σ = 61376218905600. Its totient is φ = 13631347816800.

The previous prime is 29997558330863. The next prime is 29997558330907. The reversal of 29997558330872 is 27803385579992.

It is a Smith number, since the sum of its digits (77) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 29997558330793 and 29997558330802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48515672 + ... + 49130087.

It is an arithmetic number, because the mean of its divisors is an integer number (1918006840800).

Almost surely, 2^{29997558330872} is an apocalyptic number.

29997558330872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

29997558330872 is an abundant number, since it is smaller than the sum of its proper divisors (31378660574728).

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

29997558330872 is a wasteful number, since it uses less digits than its factorization.

29997558330872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97649267 (or 97649263 counting only the distinct ones).

The product of its (nonzero) digits is 2057529600, while the sum is 77.

The spelling of 29997558330872 in words is "twenty-nine trillion, nine hundred ninety-seven billion, five hundred fifty-eight million, three hundred thirty thousand, eight hundred seventy-two".