67639912486 has 32 divisors (see below), whose sum is σ = 107168054400. Its totient is φ = 31929667200.

The previous prime is 67639912463. The next prime is 67639912489. The reversal of 67639912486 is 68421993676.

It is a super-2 number, since 2×67639912486² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67639912489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30154881 + ... + 30157123.

It is an arithmetic number, because the mean of its divisors is an integer number (3349001700).

Almost surely, 2^67639912486 is an apocalyptic number.

67639912486 is a deficient number, since it is larger than the sum of its proper divisors (39528141914).

67639912486 is a wasteful number, since it uses less digits than its factorization.

67639912486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its digits is 23514624, while the sum is 61.

The spelling of 67639912486 in words is "sixty-seven billion, six hundred thirty-nine million, nine hundred twelve thousand, four hundred eighty-six".