128504355925048 has 8 divisors (see below), whose sum is σ = 240945667359480. Its totient is φ = 64252177962520.

The previous prime is 128504355925039. The next prime is 128504355925051. The reversal of 128504355925048 is 840529553405821.

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

It is a super-2 number, since 2×128504355925048² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8031522245308 + ... + 8031522245323.

It is an arithmetic number, because the mean of its divisors is an integer number (30118208419935).

Almost surely, 2^{128504355925048} is an apocalyptic number.

It is an amenable number.

128504355925048 is a deficient number, since it is larger than the sum of its proper divisors (112441311434432).

128504355925048 is a wasteful number, since it uses less digits than its factorization.

128504355925048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16063044490637 (or 16063044490633 counting only the distinct ones).

The product of its (nonzero) digits is 69120000, while the sum is 61.

The spelling of 128504355925048 in words is "one hundred twenty-eight trillion, five hundred four billion, three hundred fifty-five million, nine hundred twenty-five thousand, forty-eight".