47394209992 has 8 divisors (see below), whose sum is σ = 88864143750. Its totient is φ = 23697104992.

The previous prime is 47394209971. The next prime is 47394210001. The reversal of 47394209992 is 29990249374.

It can be written as a sum of positive squares in only one way, i.e., 25977058276 + 21417151716 = 161174^2 + 146346^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×47394209992² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2962138117 + ... + 2962138132.

Almost surely, 2^47394209992 is an apocalyptic number.

It is an amenable number.

47394209992 is a deficient number, since it is larger than the sum of its proper divisors (41469933758).

47394209992 is a wasteful number, since it uses less digits than its factorization.

47394209992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924276255 (or 5924276251 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 47394209992 in words is "forty-seven billion, three hundred ninety-four million, two hundred nine thousand, nine hundred ninety-two".