165291742350 has 72 divisors (see below), whose sum is σ = 507524369040. Its totient is φ = 37780968960.

The previous prime is 165291742333. The next prime is 165291742361. The reversal of 165291742350 is 53247192561.

165291742350 is a `hidden beast` number, since 1 + 6 + 5 + 291 + 7 + 4 + 2 + 350 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 165291742296 and 165291742305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26233635 + ... + 26239934.

It is an arithmetic number, because the mean of its divisors is an integer number (7048949570).

Almost surely, 2^165291742350 is an apocalyptic number.

165291742350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165291742350 is an abundant number, since it is smaller than the sum of its proper divisors (342232626690).

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

165291742350 is a wasteful number, since it uses less digits than its factorization.

165291742350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52473594 (or 52473586 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

The spelling of 165291742350 in words is "one hundred sixty-five billion, two hundred ninety-one million, seven hundred forty-two thousand, three hundred fifty".