16949513655 has 192 divisors, whose sum is σ = 33754226688. Its totient is φ = 8121876480.

The previous prime is 16949513641. The next prime is 16949513657. The reversal of 16949513655 is 55631594961.

16949513655 is a `hidden beast` number, since 1 + 69 + 4 + 9 + 513 + 65 + 5 = 666.

It is not a de Polignac number, because 16949513655 - 2⁴ = 16949513639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16949513657) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 65951287 + ... + 65951543.

It is an arithmetic number, because the mean of its divisors is an integer number (175803264).

Almost surely, 2^16949513655 is an apocalyptic number.

16949513655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16949513655 is a deficient number, since it is larger than the sum of its proper divisors (16804713033).

16949513655 is a wasteful number, since it uses less digits than its factorization.

16949513655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 416 counting only the distinct ones).

The product of its digits is 4374000, while the sum is 54.

The spelling of 16949513655 in words is "sixteen billion, nine hundred forty-nine million, five hundred thirteen thousand, six hundred fifty-five".