73901697505 has 4 divisors (see below), whose sum is σ = 88682037012. Its totient is φ = 59121358000.

The previous prime is 73901697497. The next prime is 73901697511. The reversal of 73901697505 is 50579610937.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50579610937 = 23 ⋅2199113519.

It can be written as a sum of positive squares in 2 ways, for example, as 24728191504 + 49173506001 = 157252^2 + 221751^2 .

It is not a de Polignac number, because 73901697505 - 2³ = 73901697497 is a prime.

It is a super-2 number, since 2×73901697505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 7390169746 + ... + 7390169755.

It is an arithmetic number, because the mean of its divisors is an integer number (22170509253).

Almost surely, 2^73901697505 is an apocalyptic number.

It is an amenable number.

73901697505 is a deficient number, since it is larger than the sum of its proper divisors (14780339507).

73901697505 is a wasteful number, since it uses less digits than its factorization.

73901697505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14780339506.

The product of its (nonzero) digits is 1786050, while the sum is 52.

The spelling of 73901697505 in words is "seventy-three billion, nine hundred one million, six hundred ninety-seven thousand, five hundred five".