73021428803 has 4 divisors (see below), whose sum is σ = 73132235880. Its totient is φ = 72910621728.

The previous prime is 73021428793. The next prime is 73021428811. The reversal of 73021428803 is 30882412037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30882412037 = 31321 ⋅985997.

It is a cyclic number.

It is not a de Polignac number, because 73021428803 - 2²⁶ = 72954319939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73021428863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55402550 + ... + 55403867.

It is an arithmetic number, because the mean of its divisors is an integer number (18283058970).

Almost surely, 2^73021428803 is an apocalyptic number.

73021428803 is a deficient number, since it is larger than the sum of its proper divisors (110807077).

73021428803 is a wasteful number, since it uses less digits than its factorization.

73021428803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110807076.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 73021428803 in words is "seventy-three billion, twenty-one million, four hundred twenty-eight thousand, eight hundred three".