29115233680 has 80 divisors (see below), whose sum is σ = 76736963520. Its totient is φ = 10184431104.

The previous prime is 29115233677. The next prime is 29115233681. The reversal of 29115233680 is 8633251192.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (29115233681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716962 + ... + 756481.

It is an arithmetic number, because the mean of its divisors is an integer number (959212044).

Almost surely, 2^29115233680 is an apocalyptic number.

29115233680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29115233680 is an abundant number, since it is smaller than the sum of its proper divisors (47621729840).

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

29115233680 is a wasteful number, since it uses less digits than its factorization.

29115233680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473488 (or 1473482 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 29115233680 in words is "twenty-nine billion, one hundred fifteen million, two hundred thirty-three thousand, six hundred eighty".