65631440206 has 8 divisors (see below), whose sum is σ = 98449192440. Its totient is φ = 32815042728.

The previous prime is 65631440191. The next prime is 65631440249. The reversal of 65631440206 is 60204413656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207396 + ... + 417463.

It is an arithmetic number, because the mean of its divisors is an integer number (12306149055).

Almost surely, 2^65631440206 is an apocalyptic number.

65631440206 is a deficient number, since it is larger than the sum of its proper divisors (32817752234).

65631440206 is a wasteful number, since it uses less digits than its factorization.

65631440206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677378.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 65631440206 in words is "sixty-five billion, six hundred thirty-one million, four hundred forty thousand, two hundred six".