4491577804916 has 6 divisors (see below), whose sum is σ = 7860261158610. Its totient is φ = 2245788902456.

The previous prime is 4491577804849. The next prime is 4491577804933. The reversal of 4491577804916 is 6194087751944.

It can be written as a sum of positive squares in only one way, i.e., 2634953548516 + 1856624256400 = 1623254^2 + 1362580^2 .

It is a super-2 number, since 2×4491577804916² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561447225611 + ... + 561447225618.

It is an arithmetic number, because the mean of its divisors is an integer number (1310043526435).

Almost surely, 2^{4491577804916} is an apocalyptic number.

It is an amenable number.

4491577804916 is a deficient number, since it is larger than the sum of its proper divisors (3368683353694).

4491577804916 is a wasteful number, since it uses less digits than its factorization.

4491577804916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122894451233 (or 1122894451231 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 4491577804916 in words is "four trillion, four hundred ninety-one billion, five hundred seventy-seven million, eight hundred four thousand, nine hundred sixteen".