29130820000 has 60 divisors (see below), whose sum is σ = 71666236026. Its totient is φ = 11652320000.

The previous prime is 29130819973. The next prime is 29130820013. The reversal of 29130820000 is 2803192.

It can be written as a sum of positive squares in 5 ways, for example, as 63297936 + 29067522064 = 7956^2 + 170492^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 708271 + ... + 748270.

Almost surely, 2^29130820000 is an apocalyptic number.

29130820000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29130820000 is an abundant number, since it is smaller than the sum of its proper divisors (42535416026).

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

29130820000 is an equidigital number, since it uses as much as digits as its factorization.

29130820000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456571 (or 1456548 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 29130820000 in words is "twenty-nine billion, one hundred thirty million, eight hundred twenty thousand".