81429553342 has 16 divisors (see below), whose sum is σ = 129377142432. Its totient is φ = 38305611520.

The previous prime is 81429553333. The next prime is 81429553367. The reversal of 81429553342 is 24335592418.

It is a junction number, because it is equal to n+sod(n) for n = 81429553292 and 81429553301.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 349543 + ... + 533890.

It is an arithmetic number, because the mean of its divisors is an integer number (8086071402).

Almost surely, 2^81429553342 is an apocalyptic number.

81429553342 is a deficient number, since it is larger than the sum of its proper divisors (47947589090).

81429553342 is a wasteful number, since it uses less digits than its factorization.

81429553342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886163.

The product of its digits is 1036800, while the sum is 46.

The spelling of 81429553342 in words is "eighty-one billion, four hundred twenty-nine million, five hundred fifty-three thousand, three hundred forty-two".