659770771968 has 2160 divisors, whose sum is σ = 2710034046720. Its totient is φ = 153280512000.

The previous prime is 659770771939. The next prime is 659770771991. The reversal of 659770771968 is 869177077956.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 659770771896 and 659770771905.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 16091970028 + ... + 16091970068.

It is an arithmetic number, because the mean of its divisors is an integer number (1254645392).

Almost surely, 2^659770771968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 659770771968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355017023360).

659770771968 is an abundant number, since it is smaller than the sum of its proper divisors (2050263274752).

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

659770771968 is a wasteful number, since it uses less digits than its factorization.

659770771968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 280052640, while the sum is 72.

The spelling of 659770771968 in words is "six hundred fifty-nine billion, seven hundred seventy million, seven hundred seventy-one thousand, nine hundred sixty-eight".