68130786468855 has 64 divisors (see below), whose sum is σ = 122194477006848. Its totient is φ = 32131930642560.

The previous prime is 68130786468709. The next prime is 68130786468911. The reversal of 68130786468855 is 55886468703186.

It is not a de Polignac number, because 68130786468855 - 2²⁰ = 68130785420279 is a prime.

It is a super-2 number, since 2×68130786468855² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25685019 + ... + 28213148.

It is an arithmetic number, because the mean of its divisors is an integer number (1909288703232).

Almost surely, 2^{68130786468855} is an apocalyptic number.

68130786468855 is a deficient number, since it is larger than the sum of its proper divisors (54063690537993).

68130786468855 is a wasteful number, since it uses less digits than its factorization.

68130786468855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53898396.

The product of its (nonzero) digits is 1857945600, while the sum is 75.

The spelling of 68130786468855 in words is "sixty-eight trillion, one hundred thirty billion, seven hundred eighty-six million, four hundred sixty-eight thousand, eight hundred fifty-five".