103651645645 has 4 divisors (see below), whose sum is σ = 124381974780. Its totient is φ = 82921316512.

The previous prime is 103651645639. The next prime is 103651645681. The reversal of 103651645645 is 546546156301.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39858525316 + 63793120329 = 199646^2 + 252573^2 .

It is a cyclic number.

It is not a de Polignac number, because 103651645645 - 2¹⁷ = 103651514573 is a prime.

It is a super-3 number, since 3×103651645645³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103651645595 and 103651645604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10365164560 + ... + 10365164569.

It is an arithmetic number, because the mean of its divisors is an integer number (31095493695).

Almost surely, 2^103651645645 is an apocalyptic number.

It is an amenable number.

103651645645 is a deficient number, since it is larger than the sum of its proper divisors (20730329135).

103651645645 is an equidigital number, since it uses as much as digits as its factorization.

103651645645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20730329134.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 103651645645 in words is "one hundred three billion, six hundred fifty-one million, six hundred forty-five thousand, six hundred forty-five".