85137405338 has 4 divisors (see below), whose sum is σ = 127706108010. Its totient is φ = 42568702668.

The previous prime is 85137405329. The next prime is 85137405343. The reversal of 85137405338 is 83350473158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50614650529 + 34522754809 = 224977^2 + 185803^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85137405292 and 85137405301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21284351333 + ... + 21284351336.

Almost surely, 2^85137405338 is an apocalyptic number.

85137405338 is a deficient number, since it is larger than the sum of its proper divisors (42568702672).

85137405338 is a wasteful number, since it uses less digits than its factorization.

85137405338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42568702671.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 85137405338 in words is "eighty-five billion, one hundred thirty-seven million, four hundred five thousand, three hundred thirty-eight".