169640140032 has 108 divisors (see below), whose sum is σ = 533579364864. Its totient is φ = 51406095360.

The previous prime is 169640139997. The next prime is 169640140069. The reversal of 169640140032 is 230041046961.

169640140032 is a `hidden beast` number, since 1 + 6 + 9 + 640 + 1 + 4 + 0 + 0 + 3 + 2 = 666.

It is a super-2 number, since 2×169640140032² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3321408 + ... + 3372095.

Almost surely, 2^169640140032 is an apocalyptic number.

169640140032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

169640140032 is an abundant number, since it is smaller than the sum of its proper divisors (363939224832).

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

169640140032 is a wasteful number, since it uses less digits than its factorization.

169640140032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6693536 (or 6693519 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 169640140032 its reverse (230041046961), we get a palindrome (399681186993).

The spelling of 169640140032 in words is "one hundred sixty-nine billion, six hundred forty million, one hundred forty thousand, thirty-two".