34345413521 has 6 divisors (see below), whose sum is σ = 35162721090. Its totient is φ = 33546681168.

The previous prime is 34345413493. The next prime is 34345413629. The reversal of 34345413521 is 12531454343.

It can be written as a sum of positive squares in only one way, i.e., 33240582400 + 1104831121 = 182320^2 + 33239^2 .

It is not a de Polignac number, because 34345413521 - 2¹⁸ = 34345151377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34345473521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9285716 + ... + 9289413.

It is an arithmetic number, because the mean of its divisors is an integer number (5860453515).

Almost surely, 2^34345413521 is an apocalyptic number.

It is an amenable number.

34345413521 is a deficient number, since it is larger than the sum of its proper divisors (817307569).

34345413521 is an equidigital number, since it uses as much as digits as its factorization.

34345413521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18575215 (or 18575172 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

Adding to 34345413521 its reverse (12531454343), we get a palindrome (46876867864).

The spelling of 34345413521 in words is "thirty-four billion, three hundred forty-five million, four hundred thirteen thousand, five hundred twenty-one".