165700487487 has 8 divisors (see below), whose sum is σ = 226071983104. Its totient is φ = 107897991768.

The previous prime is 165700487479. The next prime is 165700487569. The reversal of 165700487487 is 784784007561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165700487487 - 2³ = 165700487479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165700487287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642249823 + ... + 642250080.

It is an arithmetic number, because the mean of its divisors is an integer number (28258997888).

Almost surely, 2^165700487487 is an apocalyptic number.

165700487487 is a deficient number, since it is larger than the sum of its proper divisors (60371495617).

165700487487 is a wasteful number, since it uses less digits than its factorization.

165700487487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284499949.

The product of its (nonzero) digits is 10536960, while the sum is 57.

The spelling of 165700487487 in words is "one hundred sixty-five billion, seven hundred million, four hundred eighty-seven thousand, four hundred eighty-seven".