671436767232 has 828 divisors, whose sum is σ = 2543761186680. Its totient is φ = 174399160320.

The previous prime is 671436767207. The next prime is 671436767257. The reversal of 671436767232 is 232767634176.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

671436767232 is a `hidden beast` number, since 6 + 71 + 436 + 76 + 72 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (671436767207) and next prime (671436767257).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 61039706107 + ... + 61039706117.

Almost surely, 2^671436767232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671436767232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1271880593340).

671436767232 is an abundant number, since it is smaller than the sum of its proper divisors (1872324419448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671436767232 is an frugal number, since it uses more digits than its factorization.

671436767232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 23 counting only the distinct ones).

The product of its digits is 10668672, while the sum is 54.

The spelling of 671436767232 in words is "six hundred seventy-one billion, four hundred thirty-six million, seven hundred sixty-seven thousand, two hundred thirty-two".