47978305109 has 8 divisors (see below), whose sum is σ = 54849138048. Its totient is φ = 41111669520.

The previous prime is 47978305103. The next prime is 47978305117. The reversal of 47978305109 is 90150387974.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47978305109 is a prime.

It is a super-2 number, since 2×47978305109² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47978305103) 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, 1024802 + ... + 1070595.

It is an arithmetic number, because the mean of its divisors is an integer number (6856142256).

Almost surely, 2^47978305109 is an apocalyptic number.

It is an amenable number.

47978305109 is a deficient number, since it is larger than the sum of its proper divisors (6870832939).

47978305109 is a wasteful number, since it uses less digits than its factorization.

47978305109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098675.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 47978305109 in words is "forty-seven billion, nine hundred seventy-eight million, three hundred five thousand, one hundred nine".