820874920432 has 40 divisors (see below), whose sum is σ = 1819849700736. Its totient is φ = 351378100416.

The previous prime is 820874920409. The next prime is 820874920469. The reversal of 820874920432 is 234029478028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4338598 + ... + 4523845.

Almost surely, 2^820874920432 is an apocalyptic number.

It is an amenable number.

820874920432 is an abundant number, since it is smaller than the sum of its proper divisors (998974780304).

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

820874920432 is a wasteful number, since it uses less digits than its factorization.

820874920432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863285 (or 8863279 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 820874920432 in words is "eight hundred twenty billion, eight hundred seventy-four million, nine hundred twenty thousand, four hundred thirty-two".