103515566421 has 8 divisors (see below), whose sum is σ = 138025791904. Its totient is φ = 69007859280.

The previous prime is 103515566393. The next prime is 103515566437. The reversal of 103515566421 is 124665515301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 103515566421 - 2¹⁴ = 103515550037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 103515566421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103515566621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531490 + ... + 699651.

It is an arithmetic number, because the mean of its divisors is an integer number (17253223988).

Almost surely, 2^103515566421 is an apocalyptic number.

It is an amenable number.

103515566421 is a deficient number, since it is larger than the sum of its proper divisors (34510225483).

103515566421 is a wasteful number, since it uses less digits than its factorization.

103515566421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259171.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 103515566421 in words is "one hundred three billion, five hundred fifteen million, five hundred sixty-six thousand, four hundred twenty-one".