169089252021 has 48 divisors (see below), whose sum is σ = 248312064000. Its totient is φ = 110866384800.

The previous prime is 169089251999. The next prime is 169089252037. The reversal of 169089252021 is 120252980961.

It is a happy number.

169089252021 is a `hidden beast` number, since 16 + 9 + 0 + 8 + 92 + 520 + 21 = 666.

It is not a de Polignac number, because 169089252021 - 2⁶ = 169089251957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169089252121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82926520 + ... + 82928558.

It is an arithmetic number, because the mean of its divisors is an integer number (5173168000).

Almost surely, 2^169089252021 is an apocalyptic number.

It is an amenable number.

169089252021 is a deficient number, since it is larger than the sum of its proper divisors (79222811979).

169089252021 is a wasteful number, since it uses less digits than its factorization.

169089252021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2774 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 169089252021 in words is "one hundred sixty-nine billion, eighty-nine million, two hundred fifty-two thousand, twenty-one".