29121357272 has 64 divisors (see below), whose sum is σ = 66715384320. Its totient is φ = 11632347648.

The previous prime is 29121357269. The next prime is 29121357311. The reversal of 29121357272 is 27275312192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50438 + ... + 246549.

It is an arithmetic number, because the mean of its divisors is an integer number (1042427880).

Almost surely, 2^29121357272 is an apocalyptic number.

It is an amenable number.

29121357272 is an abundant number, since it is smaller than the sum of its proper divisors (37594027048).

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

29121357272 is a wasteful number, since it uses less digits than its factorization.

29121357272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297120 (or 297116 counting only the distinct ones).

The product of its digits is 105840, while the sum is 41.

The spelling of 29121357272 in words is "twenty-nine billion, one hundred twenty-one million, three hundred fifty-seven thousand, two hundred seventy-two".