351871728705 has 48 divisors (see below), whose sum is σ = 698099276160. Its totient is φ = 160611462144.

The previous prime is 351871728697. The next prime is 351871728727. The reversal of 351871728705 is 507827178153.

351871728705 is a `hidden beast` number, since 351 + 8 + 7 + 1 + 7 + 287 + 0 + 5 = 666.

It is not a de Polignac number, because 351871728705 - 2³ = 351871728697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 639952 + ... + 1055121.

It is an arithmetic number, because the mean of its divisors is an integer number (14543734920).

Almost surely, 2^351871728705 is an apocalyptic number.

351871728705 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

351871728705 is a deficient number, since it is larger than the sum of its proper divisors (346227547455).

351871728705 is a wasteful number, since it uses less digits than its factorization.

351871728705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695750 (or 1695747 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 54.

The spelling of 351871728705 in words is "three hundred fifty-one billion, eight hundred seventy-one million, seven hundred twenty-eight thousand, seven hundred five".