47404713781 has 2 divisors, whose sum is σ = 47404713782. Its totient is φ = 47404713780.

The previous prime is 47404713773. The next prime is 47404713817. The reversal of 47404713781 is 18731740474.

Together with next prime (47404713817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34286447556 + 13118266225 = 185166^2 + 114535^2 .

It is a cyclic number.

It is not a de Polignac number, because 47404713781 - 2³ = 47404713773 is a prime.

It is a super-2 number, since 2×47404713781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47404713721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23702356890 + 23702356891.

It is an arithmetic number, because the mean of its divisors is an integer number (23702356891).

Almost surely, 2^47404713781 is an apocalyptic number.

It is an amenable number.

47404713781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47404713781 is an equidigital number, since it uses as much as digits as its factorization.

47404713781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 46.

The spelling of 47404713781 in words is "forty-seven billion, four hundred four million, seven hundred thirteen thousand, seven hundred eighty-one".