29091640620 has 384 divisors, whose sum is σ = 105572597760. Its totient is φ = 5830133760.

The previous prime is 29091640603. The next prime is 29091640631. The reversal of 29091640620 is 2604619092.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5687184 + ... + 5692296.

It is an arithmetic number, because the mean of its divisors is an integer number (274928640).

Almost surely, 2^29091640620 is an apocalyptic number.

29091640620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29091640620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52786298880).

29091640620 is an abundant number, since it is smaller than the sum of its proper divisors (76480957140).

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

29091640620 is a wasteful number, since it uses less digits than its factorization.

29091640620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5205 (or 5203 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 29091640620 in words is "twenty-nine billion, ninety-one million, six hundred forty thousand, six hundred twenty".