671647100111 has 32 divisors (see below), whose sum is σ = 742686138432. Its totient is φ = 603638784000.

The previous prime is 671647100093. The next prime is 671647100147. The reversal of 671647100111 is 111001746176.

671647100111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 671647100111 - 2¹⁴ = 671647083727 is a prime.

It is a super-2 number, since 2×671647100111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671647103111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26904011 + ... + 26928963.

It is an arithmetic number, because the mean of its divisors is an integer number (23208941826).

Almost surely, 2^671647100111 is an apocalyptic number.

671647100111 is a deficient number, since it is larger than the sum of its proper divisors (71039038321).

671647100111 is a wasteful number, since it uses less digits than its factorization.

671647100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25403.

The product of its (nonzero) digits is 7056, while the sum is 35.

Adding to 671647100111 its reverse (111001746176), we get a palindrome (782648846287).

The spelling of 671647100111 in words is "six hundred seventy-one billion, six hundred forty-seven million, one hundred thousand, one hundred eleven".