73609177138 has 32 divisors (see below), whose sum is σ = 131869598976. Its totient is φ = 30130265088.

The previous prime is 73609177121. The next prime is 73609177139. The reversal of 73609177138 is 83177190637.

It is not an unprimeable number, because it can be changed into a prime (73609177139) 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, 46870 + ... + 386542.

It is an arithmetic number, because the mean of its divisors is an integer number (4120924968).

Almost surely, 2^73609177138 is an apocalyptic number.

73609177138 is a deficient number, since it is larger than the sum of its proper divisors (58260421838).

73609177138 is a wasteful number, since it uses less digits than its factorization.

73609177138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340378.

The product of its (nonzero) digits is 1333584, while the sum is 52.

The spelling of 73609177138 in words is "seventy-three billion, six hundred nine million, one hundred seventy-seven thousand, one hundred thirty-eight".