71878218747 has 8 divisors (see below), whose sum is σ = 96537170256. Its totient is φ = 47569039872.

The previous prime is 71878218677. The next prime is 71878218749. The reversal of 71878218747 is 74781287817.

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

It is not a de Polignac number, because 71878218747 - 2²⁶ = 71811109883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71878218749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87442678 + ... + 87443499.

It is an arithmetic number, because the mean of its divisors is an integer number (12067146282).

Almost surely, 2^71878218747 is an apocalyptic number.

71878218747 is a deficient number, since it is larger than the sum of its proper divisors (24658951509).

71878218747 is a wasteful number, since it uses less digits than its factorization.

71878218747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174886317.

The product of its digits is 9834496, while the sum is 60.

The spelling of 71878218747 in words is "seventy-one billion, eight hundred seventy-eight million, two hundred eighteen thousand, seven hundred forty-seven".