747328921922 has 54 divisors (see below), whose sum is σ = 1254073454361. Its totient is φ = 333759426000.

The previous prime is 747328921891. The next prime is 747328921993. The reversal of 747328921922 is 229129823747.

It can be written as a sum of positive squares in 2 ways, for example, as 506219443081 + 241109478841 = 711491^2 + 491029^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=611281.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 820338647 + ... + 820339557.

Almost surely, 2^747328921922 is an apocalyptic number.

747328921922 is a deficient number, since it is larger than the sum of its proper divisors (506744532439).

747328921922 is an frugal number, since it uses more digits than its factorization.

747328921922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968 (or 985 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 56.

The spelling of 747328921922 in words is "seven hundred forty-seven billion, three hundred twenty-eight million, nine hundred twenty-one thousand, nine hundred twenty-two".