491255562095 has 8 divisors (see below), whose sum is σ = 589904192976. Its totient is φ = 392739437376.

The previous prime is 491255562089. The next prime is 491255562097. The reversal of 491255562095 is 590265552194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491255562095 - 2⁴ = 491255562079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491255562097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33118382 + ... + 33133211.

It is an arithmetic number, because the mean of its divisors is an integer number (73738024122).

Almost surely, 2^491255562095 is an apocalyptic number.

491255562095 is a deficient number, since it is larger than the sum of its proper divisors (98648630881).

491255562095 is a wasteful number, since it uses less digits than its factorization.

491255562095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66253081.

The product of its (nonzero) digits is 4860000, while the sum is 53.

Subtracting 491255562095 from its reverse (590265552194), we obtain a palindrome (99009990099).

The spelling of 491255562095 in words is "four hundred ninety-one billion, two hundred fifty-five million, five hundred sixty-two thousand, ninety-five".