165708016240 has 80 divisors (see below), whose sum is σ = 414977689728. Its totient is φ = 61174130688.

The previous prime is 165708016193. The next prime is 165708016297. The reversal of 165708016240 is 42610807561.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×165708016240² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 165708016193 and 165708016202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9052377 + ... + 9070663.

Almost surely, 2^165708016240 is an apocalyptic number.

165708016240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165708016240 is an abundant number, since it is smaller than the sum of its proper divisors (249269673488).

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

165708016240 is a wasteful number, since it uses less digits than its factorization.

165708016240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27026 (or 27020 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 165708016240 in words is "one hundred sixty-five billion, seven hundred eight million, sixteen thousand, two hundred forty".