163170253787497 has 8 divisors (see below), whose sum is σ = 178023142448352. Its totient is φ = 148320569997600.

The previous prime is 163170253787473. The next prime is 163170253787509. The reversal of 163170253787497 is 794787352071361.

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

It is not a de Polignac number, because 163170253787497 - 2¹⁹ = 163170253263209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163170253787297) 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, 801111279 + ... + 801314932.

It is an arithmetic number, because the mean of its divisors is an integer number (22252892806044).

It is a 1-persistent number, because it is pandigital, but 2⋅163170253787497 = 326340507574994 is not.

Almost surely, 2^{163170253787497} is an apocalyptic number.

It is an amenable number.

163170253787497 is a deficient number, since it is larger than the sum of its proper divisors (14852888660855).

163170253787497 is a wasteful number, since it uses less digits than its factorization.

163170253787497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602435479.

The product of its (nonzero) digits is 373403520, while the sum is 70.

The spelling of 163170253787497 in words is "one hundred sixty-three trillion, one hundred seventy billion, two hundred fifty-three million, seven hundred eighty-seven thousand, four hundred ninety-seven".