16827772555 has 32 divisors (see below), whose sum is σ = 23028115968. Its totient is φ = 11685273600.

The previous prime is 16827772547. The next prime is 16827772561. The reversal of 16827772555 is 55527772861.

It is a happy number.

It is not a de Polignac number, because 16827772555 - 2³ = 16827772547 is a prime.

It is a super-2 number, since 2×16827772555² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 16827772496 and 16827772505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710667 + ... + 733963.

It is an arithmetic number, because the mean of its divisors is an integer number (719628624).

Almost surely, 2^16827772555 is an apocalyptic number.

16827772555 is a deficient number, since it is larger than the sum of its proper divisors (6200343413).

16827772555 is a wasteful number, since it uses less digits than its factorization.

16827772555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23907.

The product of its digits is 8232000, while the sum is 55.

The spelling of 16827772555 in words is "sixteen billion, eight hundred twenty-seven million, seven hundred seventy-two thousand, five hundred fifty-five".