72103102603 has 16 divisors (see below), whose sum is σ = 87373739520. Its totient is φ = 58122501696.

The previous prime is 72103102583. The next prime is 72103102613. The reversal of 72103102603 is 30620130127.

It is not a de Polignac number, because 72103102603 - 2⁹ = 72103102091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72103102613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1960351 + ... + 1996792.

It is an arithmetic number, because the mean of its divisors is an integer number (5460858720).

Almost surely, 2^72103102603 is an apocalyptic number.

72103102603 is a deficient number, since it is larger than the sum of its proper divisors (15270636917).

72103102603 is a wasteful number, since it uses less digits than its factorization.

72103102603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3957306.

The product of its (nonzero) digits is 1512, while the sum is 25.

The spelling of 72103102603 in words is "seventy-two billion, one hundred three million, one hundred two thousand, six hundred three".