29974543680 has 56 divisors (see below), whose sum is σ = 95169179232. Its totient is φ = 7993211392.

The previous prime is 29974543663. The next prime is 29974543681. The reversal of 29974543680 is 8634547992.

It is a self number, because there is not a number n which added to its sum of digits gives 29974543680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29974543681) 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, 15610782 + ... + 15612701.

Almost surely, 2^29974543680 is an apocalyptic number.

29974543680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29974543680 is an abundant number, since it is smaller than the sum of its proper divisors (65194635552).

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

29974543680 is a wasteful number, since it uses less digits than its factorization.

29974543680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31223503 (or 31223493 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 29974543680 in words is "twenty-nine billion, nine hundred seventy-four million, five hundred forty-three thousand, six hundred eighty".