169234632440 has 32 divisors (see below), whose sum is σ = 381541050000. Its totient is φ = 67558185984.

The previous prime is 169234632433. The next prime is 169234632493. The reversal of 169234632440 is 44236432961.

It is a junction number, because it is equal to n+sod(n) for n = 169234632391 and 169234632400.

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, 4219385 + ... + 4259304.

Almost surely, 2^169234632440 is an apocalyptic number.

169234632440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169234632440 is an abundant number, since it is smaller than the sum of its proper divisors (212306417560).

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

169234632440 is a wasteful number, since it uses less digits than its factorization.

169234632440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479199 (or 8479195 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 169234632440 in words is "one hundred sixty-nine billion, two hundred thirty-four million, six hundred thirty-two thousand, four hundred forty".