67815673972 has 12 divisors (see below), whose sum is σ = 123837317856. Its totient is φ = 32433583160.

The previous prime is 67815673969. The next prime is 67815673973. The reversal of 67815673972 is 27937651876.

It is a self number, because there is not a number n which added to its sum of digits gives 67815673972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67815673973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368563354 + ... + 368563537.

It is an arithmetic number, because the mean of its divisors is an integer number (10319776488).

Almost surely, 2^67815673972 is an apocalyptic number.

It is an amenable number.

67815673972 is a deficient number, since it is larger than the sum of its proper divisors (56021643884).

67815673972 is a wasteful number, since it uses less digits than its factorization.

67815673972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737126918 (or 737126916 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 61.

The spelling of 67815673972 in words is "sixty-seven billion, eight hundred fifteen million, six hundred seventy-three thousand, nine hundred seventy-two".