659778618048 has 112 divisors (see below), whose sum is σ = 2016382356864. Its totient is φ = 188172144640.

The previous prime is 659778618047. The next prime is 659778618049. The reversal of 659778618048 is 840816877956.

659778618048 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (659778618047) and next prime (659778618049).

It is a super-4 number, since 4×659778618048⁴ (a number of 48 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (659778618047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9152190 + ... + 9223997.

Almost surely, 2^659778618048 is an apocalyptic number.

659778618048 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

659778618048 is an abundant number, since it is smaller than the sum of its proper divisors (1356603738816).

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

659778618048 is a wasteful number, since it uses less digits than its factorization.

659778618048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18376230 (or 18376220 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 69.

The spelling of 659778618048 in words is "six hundred fifty-nine billion, seven hundred seventy-eight million, six hundred eighteen thousand, forty-eight".