851698729946 has 8 divisors (see below), whose sum is σ = 1299201452640. Its totient is φ = 418631579068.

The previous prime is 851698729933. The next prime is 851698729951. The reversal of 851698729946 is 649927896158.

851698729946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3608892806 + ... + 3608893041.

It is an arithmetic number, because the mean of its divisors is an integer number (162400181580).

Almost surely, 2^851698729946 is an apocalyptic number.

851698729946 is a deficient number, since it is larger than the sum of its proper divisors (447502722694).

851698729946 is a wasteful number, since it uses less digits than its factorization.

851698729946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7217785908.

The product of its digits is 470292480, while the sum is 74.

The spelling of 851698729946 in words is "eight hundred fifty-one billion, six hundred ninety-eight million, seven hundred twenty-nine thousand, nine hundred forty-six".