434027864655781 has 16 divisors (see below), whose sum is σ = 474257769987456. Its totient is φ = 393926995000000.

The previous prime is 434027864655779. The next prime is 434027864655787. The reversal of 434027864655781 is 187556468720434.

It is not a de Polignac number, because 434027864655781 - 2¹ = 434027864655779 is a prime.

It is a super-2 number, since 2×434027864655781² (a number of 30 digits) contains 22 as substring.

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 434027864655781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434027864655787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31782531 + ... + 43338031.

It is an arithmetic number, because the mean of its divisors is an integer number (29641110624216).

Almost surely, 2^{434027864655781} is an apocalyptic number.

It is an amenable number.

434027864655781 is a deficient number, since it is larger than the sum of its proper divisors (40229905331675).

434027864655781 is a wasteful number, since it uses less digits than its factorization.

434027864655781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561084.

The product of its (nonzero) digits is 1083801600, while the sum is 70.

The spelling of 434027864655781 in words is "four hundred thirty-four trillion, twenty-seven billion, eight hundred sixty-four million, six hundred fifty-five thousand, seven hundred eighty-one".