671236903243432 has 16 divisors (see below), whose sum is σ = 1258622538961140. Its totient is φ = 335604226187136.

The previous prime is 671236903243337. The next prime is 671236903243483. The reversal of 671236903243432 is 234342309632176.

It can be written as a sum of positive squares in 2 ways, for example, as 668050556862276 + 3186346381156 = 25846674^2 + 1785034^2 .

It is a super-2 number, since 2×671236903243432² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1777978783 + ... + 1778356270.

Almost surely, 2^{671236903243432} is an apocalyptic number.

It is an amenable number.

671236903243432 is a deficient number, since it is larger than the sum of its proper divisors (587385635717708).

671236903243432 is a wasteful number, since it uses less digits than its factorization.

671236903243432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556358652 (or 3556358648 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 55.

The spelling of 671236903243432 in words is "six hundred seventy-one trillion, two hundred thirty-six billion, nine hundred three million, two hundred forty-three thousand, four hundred thirty-two".