47878086718 has 64 divisors (see below), whose sum is σ = 91053642240. Its totient is φ = 18340732800.

The previous prime is 47878086671. The next prime is 47878086721. The reversal of 47878086718 is 81768087874.

It is a super-2 number, since 2×47878086718² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47878086718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2188080 + ... + 2209852.

It is an arithmetic number, because the mean of its divisors is an integer number (1422713160).

Almost surely, 2^47878086718 is an apocalyptic number.

47878086718 is a deficient number, since it is larger than the sum of its proper divisors (43175555522).

47878086718 is a wasteful number, since it uses less digits than its factorization.

47878086718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22033.

The product of its (nonzero) digits is 33718272, while the sum is 64.

The spelling of 47878086718 in words is "forty-seven billion, eight hundred seventy-eight million, eighty-six thousand, seven hundred eighteen".