29997973809546 has 16 divisors (see below), whose sum is σ = 60022743513600. Its totient is φ = 9994858620768.

The previous prime is 29997973809451. The next prime is 29997973809547. The reversal of 29997973809546 is 64590837979992.

It is a super-2 number, since 2×29997973809546² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (29997973809547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1116481051 + ... + 1116507918.

It is an arithmetic number, because the mean of its divisors is an integer number (3751421469600).

Almost surely, 2^{29997973809546} is an apocalyptic number.

29997973809546 is an abundant number, since it is smaller than the sum of its proper divisors (30024769704054).

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

29997973809546 is a wasteful number, since it uses less digits than its factorization.

29997973809546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232991213.

The product of its (nonzero) digits is 16665989760, while the sum is 87.

The spelling of 29997973809546 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-three million, eight hundred nine thousand, five hundred forty-six".