850638739488 has 96 divisors (see below), whose sum is σ = 2236674585600. Its totient is φ = 283070785536.

The previous prime is 850638739439. The next prime is 850638739591. The reversal of 850638739488 is 884937836058.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-5 number, since 5×850638739488⁵ (a number of 61 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204527553 + ... + 204531711.

It is an arithmetic number, because the mean of its divisors is an integer number (23298693600).

Almost surely, 2^850638739488 is an apocalyptic number.

It is an amenable number.

850638739488 is an abundant number, since it is smaller than the sum of its proper divisors (1386035846112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

850638739488 is a wasteful number, since it uses less digits than its factorization.

850638739488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234 (or 7226 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 69.

The spelling of 850638739488 in words is "eight hundred fifty billion, six hundred thirty-eight million, seven hundred thirty-nine thousand, four hundred eighty-eight".