169078981640 has 32 divisors (see below), whose sum is σ = 380695178880. Its totient is φ = 67584042432.

The previous prime is 169078981639. The next prime is 169078981681. The reversal of 169078981640 is 46189870961.

It is a self number, because there is not a number n which added to its sum of digits gives 169078981640.

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, 1428314 + ... + 1542153.

It is an arithmetic number, because the mean of its divisors is an integer number (11896724340).

Almost surely, 2^169078981640 is an apocalyptic number.

169078981640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

169078981640 is an abundant number, since it is smaller than the sum of its proper divisors (211616197240).

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

169078981640 is a wasteful number, since it uses less digits than its factorization.

169078981640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971901 (or 2971897 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 59.

The spelling of 169078981640 in words is "one hundred sixty-nine billion, seventy-eight million, nine hundred eighty-one thousand, six hundred forty".