345615026563 has 4 divisors (see below), whose sum is σ = 345670678408. Its totient is φ = 345559374720.

The previous prime is 345615026489. The next prime is 345615026599. The reversal of 345615026563 is 365620516543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345615026563 is a prime.

It is a super-2 number, since 2×345615026563² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345615026363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27816606 + ... + 27829027.

It is an arithmetic number, because the mean of its divisors is an integer number (86417669602).

Almost surely, 2^345615026563 is an apocalyptic number.

345615026563 is a deficient number, since it is larger than the sum of its proper divisors (55651845).

345615026563 is an equidigital number, since it uses as much as digits as its factorization.

345615026563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55651844.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 345615026563 in words is "three hundred forty-five billion, six hundred fifteen million, twenty-six thousand, five hundred sixty-three".