491473148870 has 32 divisors (see below), whose sum is σ = 967008672000. Its totient is φ = 178359337440.

The previous prime is 491473148867. The next prime is 491473148939. The reversal of 491473148870 is 78841374194.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4422002 + ... + 4531781.

It is an arithmetic number, because the mean of its divisors is an integer number (30219021000).

Almost surely, 2^491473148870 is an apocalyptic number.

491473148870 is a deficient number, since it is larger than the sum of its proper divisors (475535523130).

491473148870 is a wasteful number, since it uses less digits than its factorization.

491473148870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8954300.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 491473148870 in words is "four hundred ninety-one billion, four hundred seventy-three million, one hundred forty-eight thousand, eight hundred seventy".