161288017403 has 8 divisors (see below), whose sum is σ = 166522836480. Its totient is φ = 156115149120.

The previous prime is 161288017393. The next prime is 161288017427. The reversal of 161288017403 is 304710882161.

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

It is a cyclic number.

It is not a de Polignac number, because 161288017403 - 2⁸ = 161288017147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161288017453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15482408 + ... + 15492821.

It is an arithmetic number, because the mean of its divisors is an integer number (20815354560).

Almost surely, 2^161288017403 is an apocalyptic number.

161288017403 is a deficient number, since it is larger than the sum of its proper divisors (5234819077).

161288017403 is a wasteful number, since it uses less digits than its factorization.

161288017403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30975397.

The product of its (nonzero) digits is 64512, while the sum is 41.

Adding to 161288017403 its reverse (304710882161), we get a palindrome (465998899564).

The spelling of 161288017403 in words is "one hundred sixty-one billion, two hundred eighty-eight million, seventeen thousand, four hundred three".