671125502661 has 8 divisors (see below), whose sum is σ = 894859396704. Its totient is φ = 447404305200.

The previous prime is 671125502527. The next prime is 671125502687. The reversal of 671125502661 is 166205521176.

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

It is not a de Polignac number, because 671125502661 - 2¹⁵ = 671125469893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671125502261) 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, 3050115 + ... + 3262736.

It is an arithmetic number, because the mean of its divisors is an integer number (111857424588).

Almost surely, 2^671125502661 is an apocalyptic number.

It is an amenable number.

671125502661 is a deficient number, since it is larger than the sum of its proper divisors (223733894043).

671125502661 is a wasteful number, since it uses less digits than its factorization.

671125502661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348291.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 671125502661 in words is "six hundred seventy-one billion, one hundred twenty-five million, five hundred two thousand, six hundred sixty-one".