73641385123 has 2 divisors, whose sum is σ = 73641385124. Its totient is φ = 73641385122.

The previous prime is 73641385121. The next prime is 73641385177. The reversal of 73641385123 is 32158314637.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73641385123 - 2¹ = 73641385121 is a prime.

Together with 73641385121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 73641385123.

It is not a weakly prime, because it can be changed into another prime (73641385121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36820692561 + 36820692562.

It is an arithmetic number, because the mean of its divisors is an integer number (36820692562).

Almost surely, 2^73641385123 is an apocalyptic number.

73641385123 is a deficient number, since it is larger than the sum of its proper divisors (1).

73641385123 is an equidigital number, since it uses as much as digits as its factorization.

73641385123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The spelling of 73641385123 in words is "seventy-three billion, six hundred forty-one million, three hundred eighty-five thousand, one hundred twenty-three".