47774775065 has 8 divisors (see below), whose sum is σ = 57331522248. Its totient is φ = 38218625280.

The previous prime is 47774775053. The next prime is 47774775067. The reversal of 47774775065 is 56057747774.

It can be written as a sum of positive squares in 4 ways, for example, as 18266063104 + 29508711961 = 135152^2 + 171781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47774775065 - 2⁸ = 47774774809 is a prime.

It is a super-2 number, since 2×47774775065² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47774774995 and 47774775013.

It is not an unprimeable number, because it can be changed into a prime (47774775067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51035 + ... + 313295.

It is an arithmetic number, because the mean of its divisors is an integer number (7166440281).

Almost surely, 2^47774775065 is an apocalyptic number.

It is an amenable number.

47774775065 is a deficient number, since it is larger than the sum of its proper divisors (9556747183).

47774775065 is a wasteful number, since it uses less digits than its factorization.

47774775065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298699.

The product of its (nonzero) digits is 40336800, while the sum is 59.

The spelling of 47774775065 in words is "forty-seven billion, seven hundred seventy-four million, seven hundred seventy-five thousand, sixty-five".