431769323551 has 16 divisors (see below), whose sum is σ = 468704946528. Its totient is φ = 396132019200.

The previous prime is 431769323539. The next prime is 431769323581. The reversal of 431769323551 is 155323967134.

It is a cyclic number.

It is not a de Polignac number, because 431769323551 - 2⁵ = 431769323519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431769323495 and 431769323504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431769323521) 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, 590116 + ... + 1100806.

It is an arithmetic number, because the mean of its divisors is an integer number (29294059158).

Almost surely, 2^431769323551 is an apocalyptic number.

431769323551 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

431769323551 is a deficient number, since it is larger than the sum of its proper divisors (36935622977).

431769323551 is a wasteful number, since it uses less digits than its factorization.

431769323551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511962.

The product of its digits is 2041200, while the sum is 49.

The spelling of 431769323551 in words is "four hundred thirty-one billion, seven hundred sixty-nine million, three hundred twenty-three thousand, five hundred fifty-one".