Search a number
-
+
68042008015 = 525752950979
BaseRepresentation
bin111111010111100111…
…101010010111001111
320111121222001010210221
4333113213222113033
52103322223224030
651131424212211
74626100345132
oct772747522717
9214558033727
1068042008015
1126946a37783
121122b16a067
1365548bab07
143416974219
151b83799e7a
hexfd79ea5cf

68042008015 has 8 divisors (see below), whose sum is σ = 81968117040. Its totient is φ = 54221801472.

The previous prime is 68042008009. The next prime is 68042008033. The reversal of 68042008015 is 51080024086.

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

It is a cyclic number.

It is not a de Polignac number, because 68042008015 - 25 = 68042007983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26474205 + ... + 26476774.

It is an arithmetic number, because the mean of its divisors is an integer number (10246014630).

Almost surely, 268042008015 is an apocalyptic number.

68042008015 is a deficient number, since it is larger than the sum of its proper divisors (13926109025).

68042008015 is a wasteful number, since it uses less digits than its factorization.

68042008015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52951241.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 68042008015 in words is "sixty-eight billion, forty-two million, eight thousand, fifteen".

Divisors: 1 5 257 1285 52950979 264754895 13608401603 68042008015