20616164542 has 8 divisors (see below), whose sum is σ = 31197913056. Its totient is φ = 10216860192.

The previous prime is 20616164519. The next prime is 20616164579. The reversal of 20616164542 is 24546161602.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45610758 + ... + 45611209.

It is an arithmetic number, because the mean of its divisors is an integer number (3899739132).

Almost surely, 2^20616164542 is an apocalyptic number.

20616164542 is a deficient number, since it is larger than the sum of its proper divisors (10581748514).

20616164542 is a wasteful number, since it uses less digits than its factorization.

20616164542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91222082.

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

The spelling of 20616164542 in words is "twenty billion, six hundred sixteen million, one hundred sixty-four thousand, five hundred forty-two".