65237693868 has 192 divisors, whose sum is σ = 181884528000. Its totient is φ = 20400242688.

The previous prime is 65237693867. The next prime is 65237693869. The reversal of 65237693868 is 86839673256.

65237693868 is a `hidden beast` number, since 6 + 523 + 76 + 9 + 38 + 6 + 8 = 666.

65237693868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65237693867) and next prime (65237693869).

It is not an unprimeable number, because it can be changed into a prime (65237693867) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66772996 + ... + 66773972.

It is an arithmetic number, because the mean of its divisors is an integer number (947315250).

Almost surely, 2^65237693868 is an apocalyptic number.

65237693868 is a gapful number since it is divisible by the number (68) 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 65237693868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90942264000).

65237693868 is an abundant number, since it is smaller than the sum of its proper divisors (116646834132).

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

65237693868 is a wasteful number, since it uses less digits than its factorization.

65237693868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1448 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 63.

The spelling of 65237693868 in words is "sixty-five billion, two hundred thirty-seven million, six hundred ninety-three thousand, eight hundred sixty-eight".