68274608155 has 32 divisors (see below), whose sum is σ = 90742728384. Its totient is φ = 48995283456.

The previous prime is 68274608093. The next prime is 68274608161. The reversal of 68274608155 is 55180647286.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68274608155 - 2⁷ = 68274608027 is a prime.

It is a super-2 number, since 2×68274608155² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488617 + ... + 612613.

It is an arithmetic number, because the mean of its divisors is an integer number (2835710262).

Almost surely, 2^68274608155 is an apocalyptic number.

68274608155 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68274608155 is a deficient number, since it is larger than the sum of its proper divisors (22468120229).

68274608155 is a wasteful number, since it uses less digits than its factorization.

68274608155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124255.

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 68274608155 in words is "sixty-eight billion, two hundred seventy-four million, six hundred eight thousand, one hundred fifty-five".