47215763261 has 2 divisors, whose sum is σ = 47215763262. Its totient is φ = 47215763260.

The previous prime is 47215763237. The next prime is 47215763267. The reversal of 47215763261 is 16236751274.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26689756900 + 20526006361 = 163370^2 + 143269^2 .

It is a cyclic number.

It is not a de Polignac number, because 47215763261 - 2⁶ = 47215763197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47215763267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23607881630 + 23607881631.

It is an arithmetic number, because the mean of its divisors is an integer number (23607881631).

Almost surely, 2^47215763261 is an apocalyptic number.

It is an amenable number.

47215763261 is a deficient number, since it is larger than the sum of its proper divisors (1).

47215763261 is an equidigital number, since it uses as much as digits as its factorization.

47215763261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The spelling of 47215763261 in words is "forty-seven billion, two hundred fifteen million, seven hundred sixty-three thousand, two hundred sixty-one".