16106556403 has 16 divisors (see below), whose sum is σ = 19216336896. Its totient is φ = 13199519520.

The previous prime is 16106556343. The next prime is 16106556409. The reversal of 16106556403 is 30465560161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16106556403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16106556409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362673 + ... + 404653.

It is an arithmetic number, because the mean of its divisors is an integer number (1201021056).

Almost surely, 2^16106556403 is an apocalyptic number.

16106556403 is a deficient number, since it is larger than the sum of its proper divisors (3109780493).

16106556403 is a wasteful number, since it uses less digits than its factorization.

16106556403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44394.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 16106556403 in words is "sixteen billion, one hundred six million, five hundred fifty-six thousand, four hundred three".