65857722106 has 32 divisors (see below), whose sum is σ = 112492800000. Its totient is φ = 28623584880.

The previous prime is 65857722103. The next prime is 65857722163. The reversal of 65857722106 is 60122775856.

It is a happy number.

It is a super-2 number, since 2×65857722106² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65857722106.

It is not an unprimeable number, because it can be changed into a prime (65857722103) 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, 1495795 + ... + 1539193.

It is an arithmetic number, because the mean of its divisors is an integer number (3515400000).

Almost surely, 2^65857722106 is an apocalyptic number.

65857722106 is a deficient number, since it is larger than the sum of its proper divisors (46635077894).

65857722106 is a wasteful number, since it uses less digits than its factorization.

65857722106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46434.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 65857722106 in words is "sixty-five billion, eight hundred fifty-seven million, seven hundred twenty-two thousand, one hundred six".