73651650865 has 24 divisors (see below), whose sum is σ = 95736091320. Its totient is φ = 54370427904.

The previous prime is 73651650797. The next prime is 73651650869. The reversal of 73651650865 is 56805615637.

It can be written as a sum of positive squares in 12 ways, for example, as 41521805361 + 32129845504 = 203769^2 + 179248^2 .

It is not a de Polignac number, because 73651650865 - 2²³ = 73643262257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73651650869) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2786331 + ... + 2812639.

It is an arithmetic number, because the mean of its divisors is an integer number (3989003805).

Almost surely, 2^73651650865 is an apocalyptic number.

It is an amenable number.

73651650865 is a deficient number, since it is larger than the sum of its proper divisors (22084440455).

73651650865 is a wasteful number, since it uses less digits than its factorization.

73651650865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29653 (or 29640 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 73651650865 in words is "seventy-three billion, six hundred fifty-one million, six hundred fifty thousand, eight hundred sixty-five".