659725378816 has 36 divisors (see below), whose sum is σ = 1504998524512. Its totient is φ = 282739447296.

The previous prime is 659725378811. The next prime is 659725378909. The reversal of 659725378816 is 618873527956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659725378811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184073370 + ... + 184076953.

Almost surely, 2^659725378816 is an apocalyptic number.

It is an amenable number.

659725378816 is an abundant number, since it is smaller than the sum of its proper divisors (845273145696).

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

659725378816 is an equidigital number, since it uses as much as digits as its factorization.

659725378816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368150346 (or 368150332 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 67.

The spelling of 659725378816 in words is "six hundred fifty-nine billion, seven hundred twenty-five million, three hundred seventy-eight thousand, eight hundred sixteen".