545123321545 has 16 divisors (see below), whose sum is σ = 713703908160. Its totient is φ = 396404478400.

The previous prime is 545123321507. The next prime is 545123321557.

545123321545 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 545123321545 - 2²⁵ = 545089767113 is a prime.

It is a super-2 number, since 2×545123321545² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 545123321498 and 545123321507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157090 + ... + 1055899.

It is an arithmetic number, because the mean of its divisors is an integer number (44606494260).

Almost surely, 2^545123321545 is an apocalyptic number.

545123321545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545123321545 is a deficient number, since it is larger than the sum of its proper divisors (168580586615).

545123321545 is a wasteful number, since it uses less digits than its factorization.

545123321545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221176.

The product of its digits is 360000, while the sum is 40.

It can be divided in two parts, 545123 and 321545, that added together give a palindrome (866668).

The spelling of 545123321545 in words is "five hundred forty-five billion, one hundred twenty-three million, three hundred twenty-one thousand, five hundred forty-five".