16205664142 has 4 divisors (see below), whose sum is σ = 24308496216. Its totient is φ = 8102832070.

The previous prime is 16205664109. The next prime is 16205664179. The reversal of 16205664142 is 24146650261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24146650261 = 48187 ⋅501103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4051416034 + ... + 4051416037.

It is an arithmetic number, because the mean of its divisors is an integer number (6077124054).

Almost surely, 2^16205664142 is an apocalyptic number.

16205664142 is a deficient number, since it is larger than the sum of its proper divisors (8102832074).

16205664142 is an equidigital number, since it uses as much as digits as its factorization.

16205664142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8102832073.

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

The spelling of 16205664142 in words is "sixteen billion, two hundred five million, six hundred sixty-four thousand, one hundred forty-two".