29971227380 has 24 divisors (see below), whose sum is σ = 66252187680. Its totient is φ = 11357517600.

The previous prime is 29971227379. The next prime is 29971227479. The reversal of 29971227380 is 8372217992.

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, 39435446 + ... + 39436205.

It is an arithmetic number, because the mean of its divisors is an integer number (2760507820).

Almost surely, 2^29971227380 is an apocalyptic number.

29971227380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29971227380 is an abundant number, since it is smaller than the sum of its proper divisors (36280960300).

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

29971227380 is a wasteful number, since it uses less digits than its factorization.

29971227380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78871679 (or 78871677 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 29971227380 in words is "twenty-nine billion, nine hundred seventy-one million, two hundred twenty-seven thousand, three hundred eighty".