345521520303415 has 8 divisors (see below), whose sum is σ = 416277720080208. Its totient is φ = 275315952432000.

The previous prime is 345521520303409. The next prime is 345521520303503. The reversal of 345521520303415 is 514303025125543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345521520303415 - 2²³ = 345521511914807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137657974962 + ... + 137657977471.

It is an arithmetic number, because the mean of its divisors is an integer number (52034715010026).

Almost surely, 2^{345521520303415} is an apocalyptic number.

345521520303415 is a deficient number, since it is larger than the sum of its proper divisors (70756199776793).

345521520303415 is a wasteful number, since it uses less digits than its factorization.

345521520303415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275315952689.

The product of its (nonzero) digits is 1080000, while the sum is 43.

Adding to 345521520303415 its reverse (514303025125543), we get a palindrome (859824545428958).

The spelling of 345521520303415 in words is "three hundred forty-five trillion, five hundred twenty-one billion, five hundred twenty million, three hundred three thousand, four hundred fifteen".