73885706858 has 4 divisors (see below), whose sum is σ = 110828560290. Its totient is φ = 36942853428.

The previous prime is 73885706857. The next prime is 73885706887. The reversal of 73885706858 is 85860758837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85860758837 = 7 ⋅12265822691.

It can be written as a sum of positive squares in only one way, i.e., 49815115249 + 24070591609 = 223193^2 + 155147^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73885706794 and 73885706803.

It is not an unprimeable number, because it can be changed into a prime (73885706857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18471426713 + ... + 18471426716.

Almost surely, 2^73885706858 is an apocalyptic number.

73885706858 is a deficient number, since it is larger than the sum of its proper divisors (36942853432).

73885706858 is a wasteful number, since it uses less digits than its factorization.

73885706858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36942853431.

The product of its (nonzero) digits is 90316800, while the sum is 65.

The spelling of 73885706858 in words is "seventy-three billion, eight hundred eighty-five million, seven hundred six thousand, eight hundred fifty-eight".