68177135015 has 16 divisors (see below), whose sum is σ = 89256746880. Its totient is φ = 49579660320.

The previous prime is 68177135009. The next prime is 68177135021. The reversal of 68177135015 is 51053177186.

It is an interprime number because it is at equal distance from previous prime (68177135009) and next prime (68177135021).

It is not a de Polignac number, because 68177135015 - 2¹⁶ = 68177069479 is a prime.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 851996 + ... + 928574.

It is an arithmetic number, because the mean of its divisors is an integer number (5578546680).

Almost surely, 2^68177135015 is an apocalyptic number.

68177135015 is a deficient number, since it is larger than the sum of its proper divisors (21079611865).

68177135015 is a wasteful number, since it uses less digits than its factorization.

68177135015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92782.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 68177135015 in words is "sixty-eight billion, one hundred seventy-seven million, one hundred thirty-five thousand, fifteen".