20616165442 has 8 divisors (see below), whose sum is σ = 31081224636. Its totient is φ = 10255757232.

The previous prime is 20616165419. The next prime is 20616165463. The reversal of 20616165442 is 24456161602.

It can be written as a sum of positive squares in 2 ways, for example, as 13757178681 + 6858986761 = 117291^2 + 82819^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26162253 + ... + 26163040.

Almost surely, 2^20616165442 is an apocalyptic number.

20616165442 is a deficient number, since it is larger than the sum of its proper divisors (10465059194).

20616165442 is a wasteful number, since it uses less digits than its factorization.

20616165442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52325492.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 20616165442 in words is "twenty billion, six hundred sixteen million, one hundred sixty-five thousand, four hundred forty-two".