834346978528 has 48 divisors (see below), whose sum is σ = 1898373788640. Its totient is φ = 353559545856.

The previous prime is 834346978523. The next prime is 834346978541. The reversal of 834346978528 is 825879643438.

It is a super-2 number, since 2×834346978528² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834346978523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20905701 + ... + 20945572.

It is an arithmetic number, because the mean of its divisors is an integer number (39549453930).

Almost surely, 2^834346978528 is an apocalyptic number.

It is an amenable number.

834346978528 is an abundant number, since it is smaller than the sum of its proper divisors (1064026810112).

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

834346978528 is a wasteful number, since it uses less digits than its factorization.

834346978528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41851379 (or 41851371 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 67.

The spelling of 834346978528 in words is "eight hundred thirty-four billion, three hundred forty-six million, nine hundred seventy-eight thousand, five hundred twenty-eight".