134309564728 has 8 divisors (see below), whose sum is σ = 251830433880. Its totient is φ = 67154782360.

The previous prime is 134309564717. The next prime is 134309564749. The reversal of 134309564728 is 827465903431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8394347788 + ... + 8394347803.

It is an arithmetic number, because the mean of its divisors is an integer number (31478804235).

It is a 1-persistent number, because it is pandigital, but 2⋅134309564728 = 268619129456 is not.

Almost surely, 2^134309564728 is an apocalyptic number.

It is an amenable number.

134309564728 is a deficient number, since it is larger than the sum of its proper divisors (117520869152).

134309564728 is a wasteful number, since it uses less digits than its factorization.

134309564728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16788695597 (or 16788695593 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 134309564728 in words is "one hundred thirty-four billion, three hundred nine million, five hundred sixty-four thousand, seven hundred twenty-eight".