21437550073916 has 6 divisors (see below), whose sum is σ = 37515712629360. Its totient is φ = 10718775036956.

The previous prime is 21437550073909. The next prime is 21437550073931. The reversal of 21437550073916 is 61937005573412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2679693759236 + ... + 2679693759243.

It is an arithmetic number, because the mean of its divisors is an integer number (6252618771560).

Almost surely, 2^{21437550073916} is an apocalyptic number.

It is an amenable number.

21437550073916 is a deficient number, since it is larger than the sum of its proper divisors (16078162555444).

21437550073916 is a wasteful number, since it uses less digits than its factorization.

21437550073916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359387518483 (or 5359387518481 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 53.

The spelling of 21437550073916 in words is "twenty-one trillion, four hundred thirty-seven billion, five hundred fifty million, seventy-three thousand, nine hundred sixteen".