47772407261 has 2 divisors, whose sum is σ = 47772407262. Its totient is φ = 47772407260.

The previous prime is 47772407257. The next prime is 47772407299. The reversal of 47772407261 is 16270427774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26408200036 + 21364207225 = 162506^2 + 146165^2 .

It is a cyclic number.

It is not a de Polignac number, because 47772407261 - 2² = 47772407257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47772409261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23886203630 + 23886203631.

It is an arithmetic number, because the mean of its divisors is an integer number (23886203631).

Almost surely, 2^47772407261 is an apocalyptic number.

It is an amenable number.

47772407261 is a deficient number, since it is larger than the sum of its proper divisors (1).

47772407261 is an equidigital number, since it uses as much as digits as its factorization.

47772407261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 921984, while the sum is 47.

The spelling of 47772407261 in words is "forty-seven billion, seven hundred seventy-two million, four hundred seven thousand, two hundred sixty-one".