747821826321 has 8 divisors (see below), whose sum is σ = 1004269119840. Its totient is φ = 494961208512.

The previous prime is 747821826277. The next prime is 747821826337. The reversal of 747821826321 is 123628128747.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 747821826321 - 2²¹ = 747819729169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (747821826361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896668440 + ... + 896669273.

It is an arithmetic number, because the mean of its divisors is an integer number (125533639980).

Almost surely, 2^747821826321 is an apocalyptic number.

It is an amenable number.

747821826321 is a deficient number, since it is larger than the sum of its proper divisors (256447293519).

747821826321 is a wasteful number, since it uses less digits than its factorization.

747821826321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793337855.

The product of its digits is 1806336, while the sum is 51.

The spelling of 747821826321 in words is "seven hundred forty-seven billion, eight hundred twenty-one million, eight hundred twenty-six thousand, three hundred twenty-one".