351689196726 has 96 divisors (see below), whose sum is σ = 892322016768. Its totient is φ = 98006302080.

The previous prime is 351689196721. The next prime is 351689196739. The reversal of 351689196726 is 627691986153.

351689196726 is a `hidden beast` number, since 3 + 516 + 8 + 9 + 1 + 96 + 7 + 26 = 666.

It is a super-3 number, since 3×351689196726³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351689196721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29042365 + ... + 29054471.

It is an arithmetic number, because the mean of its divisors is an integer number (9295021008).

Almost surely, 2^351689196726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351689196726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446161008384).

351689196726 is an abundant number, since it is smaller than the sum of its proper divisors (540632820042).

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

351689196726 is a wasteful number, since it uses less digits than its factorization.

351689196726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17786 (or 17783 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 63.

The spelling of 351689196726 in words is "three hundred fifty-one billion, six hundred eighty-nine million, one hundred ninety-six thousand, seven hundred twenty-six".