347478223785 has 64 divisors (see below), whose sum is σ = 693235445760. Its totient is φ = 144389018880.

The previous prime is 347478223747. The next prime is 347478223787. The reversal of 347478223785 is 587322874743.

It is not a de Polignac number, because 347478223785 - 2⁷ = 347478223657 is a prime.

It is a super-2 number, since 2×347478223785² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (347478223787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14521411 + ... + 14545319.

It is an arithmetic number, because the mean of its divisors is an integer number (10831803840).

Almost surely, 2^347478223785 is an apocalyptic number.

347478223785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

347478223785 is a deficient number, since it is larger than the sum of its proper divisors (345757221975).

347478223785 is a wasteful number, since it uses less digits than its factorization.

347478223785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36518.

The product of its digits is 63221760, while the sum is 60.

The spelling of 347478223785 in words is "three hundred forty-seven billion, four hundred seventy-eight million, two hundred twenty-three thousand, seven hundred eighty-five".