14721240437 has 4 divisors (see below), whose sum is σ = 14722559436. Its totient is φ = 14719921440.

The previous prime is 14721240419. The next prime is 14721240461. The reversal of 14721240437 is 73404212741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12238111876 + 2483128561 = 110626^2 + 49831^2 .

It is a cyclic number.

It is not a de Polignac number, because 14721240437 - 2¹⁰ = 14721239413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14721240397 and 14721240406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14721240467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642614 + ... + 665127.

It is an arithmetic number, because the mean of its divisors is an integer number (3680639859).

Almost surely, 2^14721240437 is an apocalyptic number.

It is an amenable number.

14721240437 is a deficient number, since it is larger than the sum of its proper divisors (1318999).

14721240437 is a wasteful number, since it uses less digits than its factorization.

14721240437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318998.

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 14721240437 in words is "fourteen billion, seven hundred twenty-one million, two hundred forty thousand, four hundred thirty-seven".