32721716380 has 48 divisors (see below), whose sum is σ = 70094951136. Its totient is φ = 12827508480.

The previous prime is 32721716341. The next prime is 32721716413. The reversal of 32721716380 is 8361712723.

It is a happy number.

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, 289527 + ... + 386353.

It is an arithmetic number, because the mean of its divisors is an integer number (1460311482).

Almost surely, 2^32721716380 is an apocalyptic number.

It is an amenable number.

32721716380 is an abundant number, since it is smaller than the sum of its proper divisors (37373234756).

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

32721716380 is a wasteful number, since it uses less digits than its factorization.

32721716380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97174 (or 97172 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 32721716380 in words is "thirty-two billion, seven hundred twenty-one million, seven hundred sixteen thousand, three hundred eighty".