103561155403 has 4 divisors (see below), whose sum is σ = 103562104408. Its totient is φ = 103560206400.

The previous prime is 103561155389. The next prime is 103561155469. The reversal of 103561155403 is 304551165301.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 304551165301 = 521 ⋅584551181.

It is a cyclic number.

It is not a de Polignac number, because 103561155403 - 2⁹ = 103561154891 is a prime.

It is a super-3 number, since 3×103561155403³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103561155703) 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, 285798 + ... + 537403.

It is an arithmetic number, because the mean of its divisors is an integer number (25890526102).

Almost surely, 2^103561155403 is an apocalyptic number.

103561155403 is a deficient number, since it is larger than the sum of its proper divisors (949005).

103561155403 is an equidigital number, since it uses as much as digits as its factorization.

103561155403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949004.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 103561155403 in words is "one hundred three billion, five hundred sixty-one million, one hundred fifty-five thousand, four hundred three".