491462373887 has 8 divisors (see below), whose sum is σ = 500961638304. Its totient is φ = 481971494368.

The previous prime is 491462373881. The next prime is 491462373911. The reversal of 491462373887 is 788373264194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491462373887 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 (491462373881) 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, 1977803 + ... + 2212380.

It is an arithmetic number, because the mean of its divisors is an integer number (62620204788).

Almost surely, 2^491462373887 is an apocalyptic number.

491462373887 is a deficient number, since it is larger than the sum of its proper divisors (9499264417).

491462373887 is a wasteful number, since it uses less digits than its factorization.

491462373887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192449.

The product of its digits is 48771072, while the sum is 62.

The spelling of 491462373887 in words is "four hundred ninety-one billion, four hundred sixty-two million, three hundred seventy-three thousand, eight hundred eighty-seven".