345130656521 has 8 divisors (see below), whose sum is σ = 395571739200. Its totient is φ = 294973749648.

The previous prime is 345130656469. The next prime is 345130656529. The reversal of 345130656521 is 125656031543.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345130656521 is a prime.

It is a super-3 number, since 3×345130656521³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345130656529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71041346 + ... + 71046203.

It is an arithmetic number, because the mean of its divisors is an integer number (49446467400).

Almost surely, 2^345130656521 is an apocalyptic number.

It is an amenable number.

345130656521 is a deficient number, since it is larger than the sum of its proper divisors (50441082679).

345130656521 is a wasteful number, since it uses less digits than its factorization.

345130656521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142087903.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 345130656521 in words is "three hundred forty-five billion, one hundred thirty million, six hundred fifty-six thousand, five hundred twenty-one".