741988395821 has 4 divisors (see below), whose sum is σ = 743124672732. Its totient is φ = 740852118912.

The previous prime is 741988395793. The next prime is 741988395871. The reversal of 741988395821 is 128593889147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238328499721 + 503659896100 = 488189^2 + 709690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-741988395821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (741988395871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568137476 + ... + 568138781.

It is an arithmetic number, because the mean of its divisors is an integer number (185781168183).

Almost surely, 2^741988395821 is an apocalyptic number.

It is an amenable number.

741988395821 is a deficient number, since it is larger than the sum of its proper divisors (1136276911).

741988395821 is a wasteful number, since it uses less digits than its factorization.

741988395821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136276910.

The product of its digits is 34836480, while the sum is 65.

The spelling of 741988395821 in words is "seven hundred forty-one billion, nine hundred eighty-eight million, three hundred ninety-five thousand, eight hundred twenty-one".