73828918651 has 4 divisors (see below), whose sum is σ = 76210496704. Its totient is φ = 71447340600.

The previous prime is 73828918643. The next prime is 73828918663. The reversal of 73828918651 is 15681982837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15681982837 = 157 ⋅99885241.

It is a cyclic number.

It is not a de Polignac number, because 73828918651 - 2³ = 73828918643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73828918151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190788980 + ... + 1190789041.

It is an arithmetic number, because the mean of its divisors is an integer number (19052624176).

Almost surely, 2^73828918651 is an apocalyptic number.

73828918651 is a deficient number, since it is larger than the sum of its proper divisors (2381578053).

73828918651 is a wasteful number, since it uses less digits than its factorization.

73828918651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381578052.

The product of its digits is 5806080, while the sum is 58.

The spelling of 73828918651 in words is "seventy-three billion, eight hundred twenty-eight million, nine hundred eighteen thousand, six hundred fifty-one".