201306477779 has 12 divisors (see below), whose sum is σ = 221343733800. Its totient is φ = 182945532000.

The previous prime is 201306477661. The next prime is 201306477821. The reversal of 201306477779 is 977774603102.

It is not a de Polignac number, because 201306477779 - 2²⁰ = 201305429203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201306477779.

It is not an unprimeable number, because it can be changed into a prime (201306477479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96104 + ... + 641754.

It is an arithmetic number, because the mean of its divisors is an integer number (18445311150).

Almost surely, 2^201306477779 is an apocalyptic number.

201306477779 is a deficient number, since it is larger than the sum of its proper divisors (20037256021).

201306477779 is a wasteful number, since it uses less digits than its factorization.

201306477779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548722 (or 548711 counting only the distinct ones).

The product of its (nonzero) digits is 3111696, while the sum is 53.

The spelling of 201306477779 in words is "two hundred one billion, three hundred six million, four hundred seventy-seven thousand, seven hundred seventy-nine".