71780678233 has 8 divisors (see below), whose sum is σ = 78999170976. Its totient is φ = 64677681600.

The previous prime is 71780678197. The next prime is 71780678243. The reversal of 71780678233 is 33287608717.

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

It is a cyclic number.

It is not a de Polignac number, because 71780678233 - 2²⁹ = 71243807321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71780678243) 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 7 ways as a sum of consecutive naturals, for example, 28872723 + ... + 28875208.

It is an arithmetic number, because the mean of its divisors is an integer number (9874896372).

Almost surely, 2^71780678233 is an apocalyptic number.

It is an amenable number.

71780678233 is a deficient number, since it is larger than the sum of its proper divisors (7218492743).

71780678233 is a wasteful number, since it uses less digits than its factorization.

71780678233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57748055.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 71780678233 in words is "seventy-one billion, seven hundred eighty million, six hundred seventy-eight thousand, two hundred thirty-three".