163397501539 has 2 divisors, whose sum is σ = 163397501540. Its totient is φ = 163397501538.

The previous prime is 163397501513. The next prime is 163397501543. The reversal of 163397501539 is 935105793361.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 163397501539 - 2⁵ = 163397501507 is a prime.

It is not a weakly prime, because it can be changed into another prime (163397501639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81698750769 + 81698750770.

It is an arithmetic number, because the mean of its divisors is an integer number (81698750770).

Almost surely, 2^163397501539 is an apocalyptic number.

163397501539 is a deficient number, since it is larger than the sum of its proper divisors (1).

163397501539 is an equidigital number, since it uses as much as digits as its factorization.

163397501539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2296350, while the sum is 52.

The spelling of 163397501539 in words is "one hundred sixty-three billion, three hundred ninety-seven million, five hundred one thousand, five hundred thirty-nine".