47772407779 has 2 divisors, whose sum is σ = 47772407780. Its totient is φ = 47772407778.

The previous prime is 47772407773. The next prime is 47772407783. The reversal of 47772407779 is 97770427774.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47772407779 - 2³¹ = 45624924131 is a prime.

It is not a weakly prime, because it can be changed into another prime (47772407773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23886203889 + 23886203890.

It is an arithmetic number, because the mean of its divisors is an integer number (23886203890).

Almost surely, 2^47772407779 is an apocalyptic number.

47772407779 is a deficient number, since it is larger than the sum of its proper divisors (1).

47772407779 is an equidigital number, since it uses as much as digits as its factorization.

47772407779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33882912, while the sum is 61.

The spelling of 47772407779 in words is "forty-seven billion, seven hundred seventy-two million, four hundred seven thousand, seven hundred seventy-nine".