345026620543 has 4 divisors (see below), whose sum is σ = 376392676968. Its totient is φ = 313660564120.

The previous prime is 345026620541. The next prime is 345026620573.

345026620543 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 345026620543 - 2¹ = 345026620541 is a prime.

It is a super-2 number, since 2×345026620543² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 345026620496 and 345026620505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345026620541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15683028196 + ... + 15683028217.

It is an arithmetic number, because the mean of its divisors is an integer number (94098169242).

Almost surely, 2^345026620543 is an apocalyptic number.

345026620543 is a deficient number, since it is larger than the sum of its proper divisors (31366056425).

345026620543 is a wasteful number, since it uses less digits than its factorization.

345026620543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31366056424.

The product of its (nonzero) digits is 518400, while the sum is 40.

It can be divided in two parts, 345026 and 620543, that added together give a palindrome (965569).

The spelling of 345026620543 in words is "three hundred forty-five billion, twenty-six million, six hundred twenty thousand, five hundred forty-three".