128568142654 has 12 divisors (see below), whose sum is σ = 224338289904. Its totient is φ = 55100632524.

The previous prime is 128568142649. The next prime is 128568142673. The reversal of 128568142654 is 456241865821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 655959814 + ... + 655960009.

It is an arithmetic number, because the mean of its divisors is an integer number (18694857492).

Almost surely, 2^128568142654 is an apocalyptic number.

128568142654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

128568142654 is a deficient number, since it is larger than the sum of its proper divisors (95770147250).

128568142654 is a wasteful number, since it uses less digits than its factorization.

128568142654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311919839 (or 1311919832 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 52.

The spelling of 128568142654 in words is "one hundred twenty-eight billion, five hundred sixty-eight million, one hundred forty-two thousand, six hundred fifty-four".