68839247693952 has 72 divisors (see below), whose sum is σ = 198092916352695. Its totient is φ = 22946322028800.

The previous prime is 68839247693873. The next prime is 68839247693981. The reversal of 68839247693952 is 25939674293886.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

68839247693952 is a `hidden beast` number, since 6 + 8 + 8 + 3 + 9 + 2 + 476 + 93 + 9 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 34419623846976 + 34419623846976 = 5866824^2 + 5866824^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5866824.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 281485327 + ... + 281729777.

Almost surely, 2^{68839247693952} is an apocalyptic number.

It is an amenable number.

68839247693952 is an abundant number, since it is smaller than the sum of its proper divisors (129253668658743).

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

68839247693952 is an frugal number, since it uses more digits than its factorization.

68839247693952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488922 (or 244456 counting only the distinct ones).

The product of its digits is 8465264640, while the sum is 81.

The spelling of 68839247693952 in words is "sixty-eight trillion, eight hundred thirty-nine billion, two hundred forty-seven million, six hundred ninety-three thousand, nine hundred fifty-two".