47218879172 has 6 divisors (see below), whose sum is σ = 82633038558. Its totient is φ = 23609439584.

The previous prime is 47218879133. The next prime is 47218879271. The reversal of 47218879172 is 27197881274.

It can be written as a sum of positive squares in only one way, i.e., 35851907716 + 11366971456 = 189346^2 + 106616^2 .

It is a super-3 number, since 3×47218879172³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5902359893 + ... + 5902359900.

It is an arithmetic number, because the mean of its divisors is an integer number (13772173093).

Almost surely, 2^47218879172 is an apocalyptic number.

It is an amenable number.

47218879172 is a deficient number, since it is larger than the sum of its proper divisors (35414159386).

47218879172 is a wasteful number, since it uses less digits than its factorization.

47218879172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11804719797 (or 11804719795 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 56.

The spelling of 47218879172 in words is "forty-seven billion, two hundred eighteen million, eight hundred seventy-nine thousand, one hundred seventy-two".