351400405321446 has 128 divisors (see below), whose sum is σ = 785208162816000. Its totient is φ = 104141301488640.

The previous prime is 351400405321439. The next prime is 351400405321481. The reversal of 351400405321446 is 644123504004153.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 351400405321398 and 351400405321407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3069290415 + ... + 3069404901.

It is an arithmetic number, because the mean of its divisors is an integer number (6134438772000).

Almost surely, 2^{351400405321446} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351400405321446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392604081408000).

351400405321446 is an abundant number, since it is smaller than the sum of its proper divisors (433807757494554).

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

351400405321446 is a wasteful number, since it uses less digits than its factorization.

351400405321446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126774.

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 351400405321446 its reverse (644123504004153), we get a palindrome (995523909325599).

The spelling of 351400405321446 in words is "three hundred fifty-one trillion, four hundred billion, four hundred five million, three hundred twenty-one thousand, four hundred forty-six".