671853930029569 has 24 divisors (see below), whose sum is σ = 826270763510400. Its totient is φ = 543183214623840.

The previous prime is 671853930029567. The next prime is 671853930029593. The reversal of 671853930029569 is 965920039358176.

It is not a de Polignac number, because 671853930029569 - 2¹ = 671853930029567 is a prime.

It is a super-2 number, since 2×671853930029569² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671853930029567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1575436617 + ... + 1575863014.

It is an arithmetic number, because the mean of its divisors is an integer number (34427948479600).

Almost surely, 2^{671853930029569} is an apocalyptic number.

It is an amenable number.

671853930029569 is a deficient number, since it is larger than the sum of its proper divisors (154416833480831).

671853930029569 is a wasteful number, since it uses less digits than its factorization.

671853930029569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151299893 (or 3151299886 counting only the distinct ones).

The product of its (nonzero) digits is 661348800, while the sum is 73.

The spelling of 671853930029569 in words is "six hundred seventy-one trillion, eight hundred fifty-three billion, nine hundred thirty million, twenty-nine thousand, five hundred sixty-nine".