491626782746 has 8 divisors (see below), whose sum is σ = 804480189984. Its totient is φ = 223466719420.

The previous prime is 491626782743. The next prime is 491626782767. The reversal of 491626782746 is 647287626194.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (491626782743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11173335950 + ... + 11173335993.

It is an arithmetic number, because the mean of its divisors is an integer number (100560023748).

Almost surely, 2^491626782746 is an apocalyptic number.

491626782746 is a deficient number, since it is larger than the sum of its proper divisors (312853407238).

491626782746 is a wasteful number, since it uses less digits than its factorization.

491626782746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22346671956.

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

The spelling of 491626782746 in words is "four hundred ninety-one billion, six hundred twenty-six million, seven hundred eighty-two thousand, seven hundred forty-six".