491196955555 has 16 divisors (see below), whose sum is σ = 622187654400. Its totient is φ = 371238582240.

The previous prime is 491196955549. The next prime is 491196955577. The reversal of 491196955555 is 555559691194.

It is not a de Polignac number, because 491196955555 - 2¹⁹ = 491196431267 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7167141 + ... + 7235350.

It is an arithmetic number, because the mean of its divisors is an integer number (38886728400).

Almost surely, 2^491196955555 is an apocalyptic number.

491196955555 is a deficient number, since it is larger than the sum of its proper divisors (130990698845).

491196955555 is a wasteful number, since it uses less digits than its factorization.

491196955555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14402874.

The product of its digits is 54675000, while the sum is 64.

The spelling of 491196955555 in words is "four hundred ninety-one billion, one hundred ninety-six million, nine hundred fifty-five thousand, five hundred fifty-five".