103544321645 has 16 divisors (see below), whose sum is σ = 127110886320. Its totient is φ = 80951145984.

The previous prime is 103544321593. The next prime is 103544321659. The reversal of 103544321645 is 546123445301.

It can be written as a sum of positive squares in 8 ways, for example, as 10486988836 + 93057332809 = 102406^2 + 305053^2 .

It is not a de Polignac number, because 103544321645 - 2²⁴ = 103527544429 is a prime.

It is a super-3 number, since 3×103544321645³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103544321599 and 103544321608.

It is a congruent number.

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, 1261514 + ... + 1341083.

It is an arithmetic number, because the mean of its divisors is an integer number (7944430395).

Almost surely, 2^103544321645 is an apocalyptic number.

It is an amenable number.

103544321645 is a deficient number, since it is larger than the sum of its proper divisors (23566564675).

103544321645 is a wasteful number, since it uses less digits than its factorization.

103544321645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602784.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 103544321645 its reverse (546123445301), we get a palindrome (649667766946).

The spelling of 103544321645 in words is "one hundred three billion, five hundred forty-four million, three hundred twenty-one thousand, six hundred forty-five".