47387471668 has 6 divisors (see below), whose sum is σ = 82928075426. Its totient is φ = 23693735832.

The previous prime is 47387471657. The next prime is 47387471749. The reversal of 47387471668 is 86617478374.

It can be written as a sum of positive squares in only one way, i.e., 45915061284 + 1472410384 = 214278^2 + 38372^2 .

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, 5923433955 + ... + 5923433962.

Almost surely, 2^47387471668 is an apocalyptic number.

It is an amenable number.

47387471668 is a deficient number, since it is larger than the sum of its proper divisors (35540603758).

47387471668 is a wasteful number, since it uses less digits than its factorization.

47387471668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11846867921 (or 11846867919 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 61.

The spelling of 47387471668 in words is "forty-seven billion, three hundred eighty-seven million, four hundred seventy-one thousand, six hundred sixty-eight".