671225618601 has 12 divisors (see below), whose sum is σ = 992095746928. Its totient is φ = 437077146744.

The previous prime is 671225618599. The next prime is 671225618611. The reversal of 671225618601 is 106816522176.

671225618601 is a `hidden beast` number, since 6 + 7 + 1 + 2 + 2 + 561 + 86 + 0 + 1 = 666.

It is not a de Polignac number, because 671225618601 - 2¹ = 671225618599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671225618611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 867216175 + ... + 867216948.

Almost surely, 2^671225618601 is an apocalyptic number.

It is an amenable number.

671225618601 is a deficient number, since it is larger than the sum of its proper divisors (320870128327).

671225618601 is a wasteful number, since it uses less digits than its factorization.

671225618601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734433172 (or 1734433169 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 671225618601 in words is "six hundred seventy-one billion, two hundred twenty-five million, six hundred eighteen thousand, six hundred one".