68888543955 has 128 divisors (see below), whose sum is σ = 144155344896. Its totient is φ = 27238886400.

The previous prime is 68888543953. The next prime is 68888543959. The reversal of 68888543955 is 55934588886.

It is not a de Polignac number, because 68888543955 - 2¹ = 68888543953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a self number, because there is not a number n which added to its sum of digits gives 68888543955.

It is not an unprimeable number, because it can be changed into a prime (68888543953) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5067127 + ... + 5080703.

It is an arithmetic number, because the mean of its divisors is an integer number (1126213632).

Almost surely, 2^68888543955 is an apocalyptic number.

68888543955 is an abundant number, since it is smaller than the sum of its proper divisors (75266800941).

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

68888543955 is a wasteful number, since it uses less digits than its factorization.

68888543955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13817.

The product of its digits is 331776000, while the sum is 69.

The spelling of 68888543955 in words is "sixty-eight billion, eight hundred eighty-eight million, five hundred forty-three thousand, nine hundred fifty-five".