32400113721 has 8 divisors (see below), whose sum is σ = 43210378944. Its totient is φ = 21594962160.

The previous prime is 32400113699. The next prime is 32400113737. The reversal of 32400113721 is 12731100423.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32400113721 - 2⁶ = 32400113657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32400113691 and 32400113700.

It is not an unprimeable number, because it can be changed into a prime (32400113761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263606 + ... + 1288991.

It is an arithmetic number, because the mean of its divisors is an integer number (5401297368).

Almost surely, 2^32400113721 is an apocalyptic number.

It is an amenable number.

32400113721 is a deficient number, since it is larger than the sum of its proper divisors (10810265223).

32400113721 is a wasteful number, since it uses less digits than its factorization.

32400113721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556831.

The product of its (nonzero) digits is 1008, while the sum is 24.

The spelling of 32400113721 in words is "thirty-two billion, four hundred million, one hundred thirteen thousand, seven hundred twenty-one".