29931959540 has 24 divisors (see below), whose sum is σ = 71836703232. Its totient is φ = 10262386080.

The previous prime is 29931959507. The next prime is 29931959593. The reversal of 29931959540 is 4595913992.

It is a happy number.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106899716 + ... + 106899995.

It is an arithmetic number, because the mean of its divisors is an integer number (2993195968).

Almost surely, 2^29931959540 is an apocalyptic number.

29931959540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29931959540 is an abundant number, since it is smaller than the sum of its proper divisors (41904743692).

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

29931959540 is a wasteful number, since it uses less digits than its factorization.

29931959540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213799727 (or 213799725 counting only the distinct ones).

The product of its (nonzero) digits is 3936600, while the sum is 56.

The spelling of 29931959540 in words is "twenty-nine billion, nine hundred thirty-one million, nine hundred fifty-nine thousand, five hundred forty".