161214063538 has 8 divisors (see below), whose sum is σ = 263804831280. Its totient is φ = 73279119780.

The previous prime is 161214063469. The next prime is 161214063541. The reversal of 161214063538 is 835360412161.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161214063538.

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, 3663955968 + ... + 3663956011.

It is an arithmetic number, because the mean of its divisors is an integer number (32975603910).

Almost surely, 2^161214063538 is an apocalyptic number.

161214063538 is a deficient number, since it is larger than the sum of its proper divisors (102590767742).

161214063538 is a wasteful number, since it uses less digits than its factorization.

161214063538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7327911992.

The product of its (nonzero) digits is 103680, while the sum is 40.

Adding to 161214063538 its reverse (835360412161), we get a palindrome (996574475699).

The spelling of 161214063538 in words is "one hundred sixty-one billion, two hundred fourteen million, sixty-three thousand, five hundred thirty-eight".