29125436340 has 648 divisors, whose sum is σ = 113619125088. Its totient is φ = 5509969920.

The previous prime is 29125436297. The next prime is 29125436359. The reversal of 29125436340 is 4363452192.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 398978544 + ... + 398978616.

It is an arithmetic number, because the mean of its divisors is an integer number (175338156).

Almost surely, 2^29125436340 is an apocalyptic number.

29125436340 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 29125436340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56809562544).

29125436340 is an abundant number, since it is smaller than the sum of its proper divisors (84493688748).

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

29125436340 is a wasteful number, since it uses less digits than its factorization.

29125436340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 29125436340 in words is "twenty-nine billion, one hundred twenty-five million, four hundred thirty-six thousand, three hundred forty".