671635135376 has 40 divisors (see below), whose sum is σ = 1308449416824. Its totient is φ = 333972208640.

The previous prime is 671635135373. The next prime is 671635135393. The reversal of 671635135376 is 673531536176.

It can be written as a sum of positive squares in 4 ways, for example, as 307514611600 + 364120523776 = 554540^2 + 603424^2 .

It is a super-2 number, since 2×671635135376² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (671635135373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7650386 + ... + 7737678.

Almost surely, 2^671635135376 is an apocalyptic number.

It is an amenable number.

671635135376 is a deficient number, since it is larger than the sum of its proper divisors (636814281448).

671635135376 is a wasteful number, since it uses less digits than its factorization.

671635135376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89939 (or 89933 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 53.

The spelling of 671635135376 in words is "six hundred seventy-one billion, six hundred thirty-five million, one hundred thirty-five thousand, three hundred seventy-six".