491782888846452 has 96 divisors (see below), whose sum is σ = 1315264001990400. Its totient is φ = 140097702804480.

The previous prime is 491782888846429. The next prime is 491782888846477. The reversal of 491782888846452 is 254648888287194.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457995298 + ... + 459067814.

It is an arithmetic number, because the mean of its divisors is an integer number (13700666687400).

Almost surely, 2^{491782888846452} is an apocalyptic number.

491782888846452 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

491782888846452 is an abundant number, since it is smaller than the sum of its proper divisors (823481113143948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491782888846452 is a wasteful number, since it uses less digits than its factorization.

491782888846452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088521 (or 1088519 counting only the distinct ones).

The product of its digits is 15854469120, while the sum is 84.

The spelling of 491782888846452 in words is "four hundred ninety-one trillion, seven hundred eighty-two billion, eight hundred eighty-eight million, eight hundred forty-six thousand, four hundred fifty-two".