16551772154 has 16 divisors (see below), whose sum is σ = 25635837696. Its totient is φ = 8006644800.

The previous prime is 16551772117. The next prime is 16551772183. The reversal of 16551772154 is 45127715561.

It is a super-2 number, since 2×16551772154² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 193109 + ... + 265319.

It is an arithmetic number, because the mean of its divisors is an integer number (1602239856).

Almost surely, 2^16551772154 is an apocalyptic number.

16551772154 is a deficient number, since it is larger than the sum of its proper divisors (9084065542).

16551772154 is a wasteful number, since it uses less digits than its factorization.

16551772154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75941.

The product of its digits is 294000, while the sum is 44.

The spelling of 16551772154 in words is "sixteen billion, five hundred fifty-one million, seven hundred seventy-two thousand, one hundred fifty-four".