821630147496 has 16 divisors (see below), whose sum is σ = 2054075368800. Its totient is φ = 273876715824.

The previous prime is 821630147473. The next prime is 821630147521. The reversal of 821630147496 is 694741036128.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17117294716 + ... + 17117294763.

It is an arithmetic number, because the mean of its divisors is an integer number (128379710550).

Almost surely, 2^821630147496 is an apocalyptic number.

It is an amenable number.

821630147496 is an abundant number, since it is smaller than the sum of its proper divisors (1232445221304).

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

821630147496 is a wasteful number, since it uses less digits than its factorization.

821630147496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34234589488 (or 34234589484 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 821630147496 in words is "eight hundred twenty-one billion, six hundred thirty million, one hundred forty-seven thousand, four hundred ninety-six".