434155188387823 has 16 divisors (see below), whose sum is σ = 517752884597760. Its totient is φ = 355951536152256.

The previous prime is 434155188387787. The next prime is 434155188387841. The reversal of 434155188387823 is 328783881551434.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434155188387823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434155186387823) 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, 25910643 + ... + 39238651.

It is an arithmetic number, because the mean of its divisors is an integer number (32359555287360).

Almost surely, 2^{434155188387823} is an apocalyptic number.

434155188387823 is a deficient number, since it is larger than the sum of its proper divisors (83597696209937).

434155188387823 is a wasteful number, since it uses less digits than its factorization.

434155188387823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13530366.

The product of its digits is 619315200, while the sum is 70.

The spelling of 434155188387823 in words is "four hundred thirty-four trillion, one hundred fifty-five billion, one hundred eighty-eight million, three hundred eighty-seven thousand, eight hundred twenty-three".