161288017394 has 8 divisors (see below), whose sum is σ = 276493744128. Its totient is φ = 69123436020.

The previous prime is 161288017393. The next prime is 161288017427. The reversal of 161288017394 is 493710882161.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (161288017391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5760286322 + ... + 5760286349.

It is an arithmetic number, because the mean of its divisors is an integer number (34561718016).

Almost surely, 2^161288017394 is an apocalyptic number.

161288017394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161288017394 is a deficient number, since it is larger than the sum of its proper divisors (115205726734).

161288017394 is a wasteful number, since it uses less digits than its factorization.

161288017394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11520572680.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 161288017394 in words is "one hundred sixty-one billion, two hundred eighty-eight million, seventeen thousand, three hundred ninety-four".