65491133642 has 32 divisors (see below), whose sum is σ = 113488444224. Its totient is φ = 28013356800.

The previous prime is 65491133633. The next prime is 65491133677. The reversal of 65491133642 is 24633119456.

It is a junction number, because it is equal to n+sod(n) for n = 65491133593 and 65491133602.

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, 4683353 + ... + 4697315.

It is an arithmetic number, because the mean of its divisors is an integer number (3546513882).

Almost surely, 2^65491133642 is an apocalyptic number.

65491133642 is a deficient number, since it is larger than the sum of its proper divisors (47997310582).

65491133642 is a wasteful number, since it uses less digits than its factorization.

65491133642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26534.

The product of its digits is 466560, while the sum is 44.

The spelling of 65491133642 in words is "sixty-five billion, four hundred ninety-one million, one hundred thirty-three thousand, six hundred forty-two".