29145079840 has 24 divisors (see below), whose sum is σ = 68855251500. Its totient is φ = 11658031872.

The previous prime is 29145079829. The next prime is 29145079841. The reversal of 29145079840 is 4897054192.

It can be written as a sum of positive squares in 2 ways, for example, as 29026618384 + 118461456 = 170372^2 + 10884^2 .

It is not an unprimeable number, because it can be changed into a prime (29145079841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91078215 + ... + 91078534.

Almost surely, 2^29145079840 is an apocalyptic number.

29145079840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29145079840 is an abundant number, since it is smaller than the sum of its proper divisors (39710171660).

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

29145079840 is a wasteful number, since it uses less digits than its factorization.

29145079840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182156764 (or 182156756 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 29145079840 in words is "twenty-nine billion, one hundred forty-five million, seventy-nine thousand, eight hundred forty".