47854491668 has 6 divisors (see below), whose sum is σ = 83745360426. Its totient is φ = 23927245832.

The previous prime is 47854491637. The next prime is 47854491673. The reversal of 47854491668 is 86619445874.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40825010704 + 7029480964 = 202052^2 + 83842^2 .

It is a super-4 number, since 4×47854491668⁴ (a number of 44 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47854491668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5981811455 + ... + 5981811462.

It is an arithmetic number, because the mean of its divisors is an integer number (13957560071).

Almost surely, 2^47854491668 is an apocalyptic number.

It is an amenable number.

47854491668 is a deficient number, since it is larger than the sum of its proper divisors (35890868758).

47854491668 is a wasteful number, since it uses less digits than its factorization.

47854491668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11963622921 (or 11963622919 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 62.

The spelling of 47854491668 in words is "forty-seven billion, eight hundred fifty-four million, four hundred ninety-one thousand, six hundred sixty-eight".