65868697356 has 96 divisors (see below), whose sum is σ = 191985819648. Its totient is φ = 17075914560.

The previous prime is 65868697343. The next prime is 65868697373. The reversal of 65868697356 is 65379686856.

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 31 ways as a sum of consecutive naturals, for example, 415101 + ... + 551403.

It is an arithmetic number, because the mean of its divisors is an integer number (1999852288).

Almost surely, 2^65868697356 is an apocalyptic number.

65868697356 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65868697356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95992909824).

65868697356 is an abundant number, since it is smaller than the sum of its proper divisors (126117122292).

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

65868697356 is a wasteful number, since it uses less digits than its factorization.

65868697356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136851 (or 136849 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 69.

The spelling of 65868697356 in words is "sixty-five billion, eight hundred sixty-eight million, six hundred ninety-seven thousand, three hundred fifty-six".