73355066251 has 4 divisors (see below), whose sum is σ = 73520653752. Its totient is φ = 73189478752.

The previous prime is 73355066243. The next prime is 73355066303. The reversal of 73355066251 is 15266055337.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15266055337 = 13 ⋅1174311949.

It is a cyclic number.

It is not a de Polignac number, because 73355066251 - 2³ = 73355066243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73355066198 and 73355066207.

It is not an unprimeable number, because it can be changed into a prime (73355066201) 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, 82793086 + ... + 82793971.

It is an arithmetic number, because the mean of its divisors is an integer number (18380163438).

Almost surely, 2^73355066251 is an apocalyptic number.

73355066251 is a deficient number, since it is larger than the sum of its proper divisors (165587501).

73355066251 is a wasteful number, since it uses less digits than its factorization.

73355066251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165587500.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 73355066251 in words is "seventy-three billion, three hundred fifty-five million, sixty-six thousand, two hundred fifty-one".