675632180821 has 8 divisors (see below), whose sum is σ = 727610335200. Its totient is φ = 623654947632.

The previous prime is 675632180809. The next prime is 675632180897. The reversal of 675632180821 is 128081236576.

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 675632180821 - 2⁵ = 675632180789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675632180521) 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, 2438646 + ... + 2701528.

It is an arithmetic number, because the mean of its divisors is an integer number (90951291900).

Almost surely, 2^675632180821 is an apocalyptic number.

It is an amenable number.

675632180821 is a deficient number, since it is larger than the sum of its proper divisors (51978154379).

675632180821 is a wasteful number, since it uses less digits than its factorization.

675632180821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460595.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 675632180821 in words is "six hundred seventy-five billion, six hundred thirty-two million, one hundred eighty thousand, eight hundred twenty-one".