163397501515 has 8 divisors (see below), whose sum is σ = 200859367968. Its totient is φ = 127529757120.

The previous prime is 163397501513. The next prime is 163397501539. The reversal of 163397501515 is 515105793361.

It is a happy number.

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

It is not a de Polignac number, because 163397501515 - 2¹ = 163397501513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163397501513) 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, 398530287 + ... + 398530696.

It is an arithmetic number, because the mean of its divisors is an integer number (25107420996).

Almost surely, 2^163397501515 is an apocalyptic number.

163397501515 is a deficient number, since it is larger than the sum of its proper divisors (37461866453).

163397501515 is an equidigital number, since it uses as much as digits as its factorization.

163397501515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797061029.

The product of its (nonzero) digits is 425250, while the sum is 46.

The spelling of 163397501515 in words is "one hundred sixty-three billion, three hundred ninety-seven million, five hundred one thousand, five hundred fifteen".