73702145108651 has 4 divisors (see below), whose sum is σ = 74109339280704. Its totient is φ = 73294950936600.

The previous prime is 73702145108633. The next prime is 73702145108747. The reversal of 73702145108651 is 15680154120737.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73702145108651 - 2³⁰ = 73701071366827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73702145108651.

It is not an unprimeable number, because it can be changed into a prime (73702165108651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203597085755 + ... + 203597086116.

It is an arithmetic number, because the mean of its divisors is an integer number (18527334820176).

Almost surely, 2^{73702145108651} is an apocalyptic number.

73702145108651 is a deficient number, since it is larger than the sum of its proper divisors (407194172053).

73702145108651 is a wasteful number, since it uses less digits than its factorization.

73702145108651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407194172052.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 73702145108651 in words is "seventy-three trillion, seven hundred two billion, one hundred forty-five million, one hundred eight thousand, six hundred fifty-one".