851930855593 has 8 divisors (see below), whose sum is σ = 894317794560. Its totient is φ = 810475497840.

The previous prime is 851930855561. The next prime is 851930855603. The reversal of 851930855593 is 395558039158.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 851930855593 - 2⁵ = 851930855561 is a prime.

It is a super-2 number, since 2×851930855593² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (851930855513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232893430 + ... + 232897087.

It is an arithmetic number, because the mean of its divisors is an integer number (111789724320).

Almost surely, 2^851930855593 is an apocalyptic number.

It is an amenable number.

851930855593 is a deficient number, since it is larger than the sum of its proper divisors (42386938967).

851930855593 is a wasteful number, since it uses less digits than its factorization.

851930855593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465790607.

The product of its (nonzero) digits is 29160000, while the sum is 61.

The spelling of 851930855593 in words is "eight hundred fifty-one billion, nine hundred thirty million, eight hundred fifty-five thousand, five hundred ninety-three".