16111554456 has 32 divisors (see below), whose sum is σ = 40327640640. Its totient is φ = 5364017568.

The previous prime is 16111554439. The next prime is 16111554491. The reversal of 16111554456 is 65445511161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386026 + ... + 425721.

It is an arithmetic number, because the mean of its divisors is an integer number (1260238770).

Almost surely, 2^16111554456 is an apocalyptic number.

It is an amenable number.

16111554456 is an abundant number, since it is smaller than the sum of its proper divisors (24216086184).

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

16111554456 is a wasteful number, since it uses less digits than its factorization.

16111554456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812583 (or 812579 counting only the distinct ones).

The product of its digits is 72000, while the sum is 39.

The spelling of 16111554456 in words is "sixteen billion, one hundred eleven million, five hundred fifty-four thousand, four hundred fifty-six".