72201342169 has 4 divisors (see below), whose sum is σ = 78765100560. Its totient is φ = 65637583780.

The previous prime is 72201342139. The next prime is 72201342173. The reversal of 72201342169 is 96124310227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72201342169 - 2¹¹ = 72201340121 is a prime.

It is a super-2 number, since 2×72201342169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72201342119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3281879179 + ... + 3281879200.

It is an arithmetic number, because the mean of its divisors is an integer number (19691275140).

Almost surely, 2^72201342169 is an apocalyptic number.

It is an amenable number.

72201342169 is a deficient number, since it is larger than the sum of its proper divisors (6563758391).

72201342169 is a wasteful number, since it uses less digits than its factorization.

72201342169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563758390.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 72201342169 in words is "seventy-two billion, two hundred one million, three hundred forty-two thousand, one hundred sixty-nine".