65491472898 has 24 divisors (see below), whose sum is σ = 146475553536. Its totient is φ = 21126281400.

The previous prime is 65491472873. The next prime is 65491472923. The reversal of 65491472898 is 89827419456.

65491472898 is a `hidden beast` number, since 6 + 549 + 1 + 4 + 7 + 2 + 89 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (65491472873) and next prime (65491472923).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58683558 + ... + 58684673.

It is an arithmetic number, because the mean of its divisors is an integer number (6103148064).

Almost surely, 2^65491472898 is an apocalyptic number.

65491472898 is an abundant number, since it is smaller than the sum of its proper divisors (80984080638).

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

65491472898 is a wasteful number, since it uses less digits than its factorization.

65491472898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117368270 (or 117368267 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 65491472898 in words is "sixty-five billion, four hundred ninety-one million, four hundred seventy-two thousand, eight hundred ninety-eight".