13421129500 has 48 divisors (see below), whose sum is σ = 29336580000. Its totient is φ = 5363904000.

The previous prime is 13421129479. The next prime is 13421129521. The reversal of 13421129500 is 592112431.

It is an interprime number because it is at equal distance from previous prime (13421129479) and next prime (13421129521).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613755 + ... + 635245.

It is an arithmetic number, because the mean of its divisors is an integer number (611178750).

Almost surely, 2^13421129500 is an apocalyptic number.

13421129500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13421129500 is an abundant number, since it is smaller than the sum of its proper divisors (15915450500).

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

13421129500 is a wasteful number, since it uses less digits than its factorization.

13421129500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22759 (or 22747 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 13421129500 in words is "thirteen billion, four hundred twenty-one million, one hundred twenty-nine thousand, five hundred".