167993281789972 has 12 divisors (see below), whose sum is σ = 293988665763520. Its totient is φ = 83996520143256.

The previous prime is 167993281789937. The next prime is 167993281789979. The reversal of 167993281789972 is 279987182399761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167993281789979) 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, 27020748 + ... + 32651299.

Almost surely, 2^{167993281789972} is an apocalyptic number.

It is an amenable number.

167993281789972 is a deficient number, since it is larger than the sum of its proper divisors (125995383973548).

167993281789972 is a wasteful number, since it uses less digits than its factorization.

167993281789972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60375870 (or 60375868 counting only the distinct ones).

The product of its digits is 10369949184, while the sum is 88.

The spelling of 167993281789972 in words is "one hundred sixty-seven trillion, nine hundred ninety-three billion, two hundred eighty-one million, seven hundred eighty-nine thousand, nine hundred seventy-two".