169293861442972 has 24 divisors (see below), whose sum is σ = 349509907496960. Its totient is φ = 70214043916080.

The previous prime is 169293861442943. The next prime is 169293861443039. The reversal of 169293861442972 is 279244168392961.

It is a junction number, because it is equal to n+sod(n) for n = 169293861442895 and 169293861442904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97519504572 + ... + 97519506307.

Almost surely, 2^{169293861442972} is an apocalyptic number.

It is an amenable number.

169293861442972 is an abundant number, since it is smaller than the sum of its proper divisors (180216046053988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169293861442972 is a wasteful number, since it uses less digits than its factorization.

169293861442972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195039010921 (or 195039010919 counting only the distinct ones).

The product of its digits is 564350976, while the sum is 73.

The spelling of 169293861442972 in words is "one hundred sixty-nine trillion, two hundred ninety-three billion, eight hundred sixty-one million, four hundred forty-two thousand, nine hundred seventy-two".