351661366518 has 192 divisors, whose sum is σ = 900221527296. Its totient is φ = 90556704000.

The previous prime is 351661366477. The next prime is 351661366523. The reversal of 351661366518 is 815663166153.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 246433321 + ... + 246434747.

It is an arithmetic number, because the mean of its divisors is an integer number (4688653788).

Almost surely, 2^351661366518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351661366518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450110763648).

351661366518 is an abundant number, since it is smaller than the sum of its proper divisors (548560160778).

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

351661366518 is a wasteful number, since it uses less digits than its factorization.

351661366518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2052 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 51.

The spelling of 351661366518 in words is "three hundred fifty-one billion, six hundred sixty-one million, three hundred sixty-six thousand, five hundred eighteen".