73785478855 has 8 divisors (see below), whose sum is σ = 96591899664. Its totient is φ = 53662166400.

The previous prime is 73785478829. The next prime is 73785478927. The reversal of 73785478855 is 55887458737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73785478855 - 2⁷ = 73785478727 is a prime.

It is a super-2 number, since 2×73785478855² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670777026 + ... + 670777135.

It is an arithmetic number, because the mean of its divisors is an integer number (12073987458).

Almost surely, 2^73785478855 is an apocalyptic number.

73785478855 is a deficient number, since it is larger than the sum of its proper divisors (22806420809).

73785478855 is a wasteful number, since it uses less digits than its factorization.

73785478855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341554177.

The product of its digits is 263424000, while the sum is 67.

The spelling of 73785478855 in words is "seventy-three billion, seven hundred eighty-five million, four hundred seventy-eight thousand, eight hundred fifty-five".