85879378650 has 48 divisors (see below), whose sum is σ = 229364007264. Its totient is φ = 21139538880.

The previous prime is 85879378477. The next prime is 85879378691. The reversal of 85879378650 is 5687397858.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22018404 + ... + 22022303.

It is an arithmetic number, because the mean of its divisors is an integer number (4778416818).

Almost surely, 2^85879378650 is an apocalyptic number.

85879378650 is an abundant number, since it is smaller than the sum of its proper divisors (143484628614).

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

85879378650 is a wasteful number, since it uses less digits than its factorization.

85879378650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44040735 (or 44040730 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 66.

The spelling of 85879378650 in words is "eighty-five billion, eight hundred seventy-nine million, three hundred seventy-eight thousand, six hundred fifty".