351665572608 has 216 divisors, whose sum is σ = 1187052231456. Its totient is φ = 98025062400.

The previous prime is 351665572589. The next prime is 351665572619. The reversal of 351665572608 is 806275566153.

It is a happy number.

351665572608 is a `hidden beast` number, since 3 + 5 + 1 + 6 + 6 + 5 + 572 + 60 + 8 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 395338 + ... + 927158.

Almost surely, 2^351665572608 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 351665572608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593526115728).

351665572608 is an abundant number, since it is smaller than the sum of its proper divisors (835386658848).

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

351665572608 is a wasteful number, since it uses less digits than its factorization.

351665572608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531891 (or 531874 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 351665572608 in words is "three hundred fifty-one billion, six hundred sixty-five million, five hundred seventy-two thousand, six hundred eight".