191063551985476 has 27 divisors (see below), whose sum is σ = 334814220372541. Its totient is φ = 95402521103264.

The previous prime is 191063551985473. The next prime is 191063551985503. The reversal of 191063551985476 is 674589155360191.

The square root of 191063551985476 is 13822574.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 168176130539076 + 22887421446400 = 12968274^2 + 4784080^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191063551985473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22364920461 + ... + 22364929003.

Almost surely, 2^{191063551985476} is an apocalyptic number.

191063551985476 is the 13822574-th square number.

It is an amenable number.

191063551985476 is a deficient number, since it is larger than the sum of its proper divisors (143750668387065).

191063551985476 is an frugal number, since it uses more digits than its factorization.

191063551985476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18708 (or 9354 counting only the distinct ones).

The product of its (nonzero) digits is 244944000, while the sum is 70.

The spelling of 191063551985476 in words is "one hundred ninety-one trillion, sixty-three billion, five hundred fifty-one million, nine hundred eighty-five thousand, four hundred seventy-six".