65821045742 has 32 divisors (see below), whose sum is σ = 101551532544. Its totient is φ = 31978800000.

The previous prime is 65821045733. The next prime is 65821045747. The reversal of 65821045742 is 24754012856.

It is a junction number, because it is equal to n+sod(n) for n = 65821045693 and 65821045702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65821045747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27995867 + ... + 27998217.

It is an arithmetic number, because the mean of its divisors is an integer number (3173485392).

Almost surely, 2^65821045742 is an apocalyptic number.

65821045742 is a deficient number, since it is larger than the sum of its proper divisors (35730486802).

65821045742 is a wasteful number, since it uses less digits than its factorization.

65821045742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its (nonzero) digits is 537600, while the sum is 44.

The spelling of 65821045742 in words is "sixty-five billion, eight hundred twenty-one million, forty-five thousand, seven hundred forty-two".