13721357004 has 24 divisors (see below), whose sum is σ = 32797391088. Its totient is φ = 4462229760.

The previous prime is 13721357003. The next prime is 13721357063. The reversal of 13721357004 is 40075312731.

It is not an unprimeable number, because it can be changed into a prime (13721357003) 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, 13943977 + ... + 13944960.

It is an arithmetic number, because the mean of its divisors is an integer number (1366557962).

Almost surely, 2^13721357004 is an apocalyptic number.

It is an amenable number.

13721357004 is an abundant number, since it is smaller than the sum of its proper divisors (19076034084).

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

13721357004 is a wasteful number, since it uses less digits than its factorization.

13721357004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27888985 (or 27888983 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

Adding to 13721357004 its reverse (40075312731), we get a palindrome (53796669735).

The spelling of 13721357004 in words is "thirteen billion, seven hundred twenty-one million, three hundred fifty-seven thousand, four".