491626908610 has 32 divisors (see below), whose sum is σ = 906570403200. Its totient is φ = 191842055040.

The previous prime is 491626908601. The next prime is 491626908613. The reversal of 491626908610 is 16809626194.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (491626908613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8811381 + ... + 8866999.

It is an arithmetic number, because the mean of its divisors is an integer number (28330325100).

Almost surely, 2^491626908610 is an apocalyptic number.

491626908610 is a deficient number, since it is larger than the sum of its proper divisors (414943494590).

491626908610 is a wasteful number, since it uses less digits than its factorization.

491626908610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77226.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 491626908610 in words is "four hundred ninety-one billion, six hundred twenty-six million, nine hundred eight thousand, six hundred ten".