191613680455 has 16 divisors (see below), whose sum is σ = 240490404864. Its totient is φ = 146285883040.

The previous prime is 191613680443. The next prime is 191613680459. The reversal of 191613680455 is 554086316191.

191613680455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 191613680455 - 2³¹ = 189466196807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191613680399 and 191613680408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191613680459) 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 15 ways as a sum of consecutive naturals, for example, 1883389 + ... + 1982518.

It is an arithmetic number, because the mean of its divisors is an integer number (15030650304).

Almost surely, 2^191613680455 is an apocalyptic number.

191613680455 is a deficient number, since it is larger than the sum of its proper divisors (48876724409).

191613680455 is a wasteful number, since it uses less digits than its factorization.

191613680455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866366.

The product of its (nonzero) digits is 777600, while the sum is 49.

The spelling of 191613680455 in words is "one hundred ninety-one billion, six hundred thirteen million, six hundred eighty thousand, four hundred fifty-five".