829440428338542 has 64 divisors (see below), whose sum is σ = 1693369647051264. Its totient is φ = 270751735762560.

The previous prime is 829440428338469. The next prime is 829440428338559. The reversal of 829440428338542 is 245833824044928.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5399679903 + ... + 5399833509.

It is an arithmetic number, because the mean of its divisors is an integer number (26458900735176).

Almost surely, 2^{829440428338542} is an apocalyptic number.

829440428338542 is an abundant number, since it is smaller than the sum of its proper divisors (863929218712722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

829440428338542 is a wasteful number, since it uses less digits than its factorization.

829440428338542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185593.

The product of its (nonzero) digits is 424673280, while the sum is 66.

The spelling of 829440428338542 in words is "eight hundred twenty-nine trillion, four hundred forty billion, four hundred twenty-eight million, three hundred thirty-eight thousand, five hundred forty-two".