354531021345 has 24 divisors (see below), whose sum is σ = 614551392000. Its totient is φ = 189073686816.

The previous prime is 354531021343. The next prime is 354531021373. The reversal of 354531021345 is 543120135453.

354531021345 is a `hidden beast` number, since 3 + 545 + 3 + 102 + 1 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 354531021345 - 2¹ = 354531021343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (354531021343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755206 + ... + 1131104.

It is an arithmetic number, because the mean of its divisors is an integer number (25606308000).

Almost surely, 2^354531021345 is an apocalyptic number.

It is an amenable number.

354531021345 is a deficient number, since it is larger than the sum of its proper divisors (260020370655).

354531021345 is a wasteful number, since it uses less digits than its factorization.

354531021345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396869 (or 396866 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 354531021345 its reverse (543120135453), we get a palindrome (897651156798).

The spelling of 354531021345 in words is "three hundred fifty-four billion, five hundred thirty-one million, twenty-one thousand, three hundred forty-five".