434505511561 has 12 divisors (see below), whose sum is σ = 478004977072. Its totient is φ = 394667559000.

The previous prime is 434505511543. The next prime is 434505511579. The reversal of 434505511561 is 165115505434.

It is an interprime number because it is at equal distance from previous prime (434505511543) and next prime (434505511579).

It is not a de Polignac number, because 434505511561 - 2¹⁷ = 434505380489 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (434505521561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1391595 + ... + 1674976.

Almost surely, 2^434505511561 is an apocalyptic number.

It is an amenable number.

434505511561 is a deficient number, since it is larger than the sum of its proper divisors (43499465511).

434505511561 is a wasteful number, since it uses less digits than its factorization.

434505511561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067764 (or 3067753 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 434505511561 in words is "four hundred thirty-four billion, five hundred five million, five hundred eleven thousand, five hundred sixty-one".