16553855038445 has 16 divisors (see below), whose sum is σ = 20022638045760. Its totient is φ = 13138154995584.

The previous prime is 16553855038417. The next prime is 16553855038463. The reversal of 16553855038445 is 54483055835561.

It is a cyclic number.

It is not a de Polignac number, because 16553855038445 - 2¹² = 16553855034349 is a prime.

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, 25447160 + ... + 26089569.

It is an arithmetic number, because the mean of its divisors is an integer number (1251414877860).

Almost surely, 2^{16553855038445} is an apocalyptic number.

It is an amenable number.

16553855038445 is a deficient number, since it is larger than the sum of its proper divisors (3468783007315).

16553855038445 is a wasteful number, since it uses less digits than its factorization.

16553855038445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51537244.

The product of its (nonzero) digits is 172800000, while the sum is 62.

The spelling of 16553855038445 in words is "sixteen trillion, five hundred fifty-three billion, eight hundred fifty-five million, thirty-eight thousand, four hundred forty-five".