29319740897640 has 64 divisors (see below), whose sum is σ = 90004786027200. Its totient is φ = 7636769720832.

The previous prime is 29319740897627. The next prime is 29319740897641. The reversal of 29319740897640 is 4679804791392.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (29319740897641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2841055005 + ... + 2841065324.

It is an arithmetic number, because the mean of its divisors is an integer number (1406324781675).

Almost surely, 2^{29319740897640} is an apocalyptic number.

29319740897640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29319740897640 is an abundant number, since it is smaller than the sum of its proper divisors (60685045129560).

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

29319740897640 is a wasteful number, since it uses less digits than its factorization.

29319740897640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5682120386 (or 5682120382 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 69.

The spelling of 29319740897640 in words is "twenty-nine trillion, three hundred nineteen billion, seven hundred forty million, eight hundred ninety-seven thousand, six hundred forty".