73056376421 has 4 divisors (see below), whose sum is σ = 83493001632. Its totient is φ = 62619751212.

The previous prime is 73056376381. The next prime is 73056376423. The reversal of 73056376421 is 12467365037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12467365037 = 103 ⋅121042379.

It is a cyclic number.

It is not a de Polignac number, because 73056376421 - 2¹⁰ = 73056375397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73056376423) 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, 5218312595 + ... + 5218312608.

It is an arithmetic number, because the mean of its divisors is an integer number (20873250408).

Almost surely, 2^73056376421 is an apocalyptic number.

It is an amenable number.

73056376421 is a deficient number, since it is larger than the sum of its proper divisors (10436625211).

73056376421 is a wasteful number, since it uses less digits than its factorization.

73056376421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436625210.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 73056376421 in words is "seventy-three billion, fifty-six million, three hundred seventy-six thousand, four hundred twenty-one".