168204001545 has 16 divisors (see below), whose sum is σ = 299029336320. Its totient is φ = 89708800752.

The previous prime is 168204001517. The next prime is 168204001597. The reversal of 168204001545 is 545100402861.

It is a happy number.

It is not a de Polignac number, because 168204001545 - 2⁵ = 168204001513 is a prime.

It is a super-2 number, since 2×168204001545² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622977649 + ... + 622977918.

It is an arithmetic number, because the mean of its divisors is an integer number (18689333520).

Almost surely, 2^168204001545 is an apocalyptic number.

168204001545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168204001545 is a deficient number, since it is larger than the sum of its proper divisors (130825334775).

168204001545 is a wasteful number, since it uses less digits than its factorization.

168204001545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245955581 (or 1245955575 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 168204001545 in words is "one hundred sixty-eight billion, two hundred four million, one thousand, five hundred forty-five".