20161616154 has 32 divisors (see below), whose sum is σ = 40898813760. Its totient is φ = 6624964992.

The previous prime is 20161616131. The next prime is 20161616159. The reversal of 20161616154 is 45161616102.

It is not an unprimeable number, because it can be changed into a prime (20161616159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183292 + ... + 271880.

It is an arithmetic number, because the mean of its divisors is an integer number (1278087930).

Almost surely, 2^20161616154 is an apocalyptic number.

20161616154 is an abundant number, since it is smaller than the sum of its proper divisors (20737197606).

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

20161616154 is a wasteful number, since it uses less digits than its factorization.

20161616154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89134.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 20161616154 in words is "twenty billion, one hundred sixty-one million, six hundred sixteen thousand, one hundred fifty-four".