9774239453623 has 4 divisors (see below), whose sum is σ = 9825413482368. Its totient is φ = 9723065424880.

The previous prime is 9774239453611. The next prime is 9774239453729. The reversal of 9774239453623 is 3263549324779.

9774239453623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9774239453623 is a prime.

It is a super-2 number, since 2×9774239453623² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9774239453123) 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, 25587014086 + ... + 25587014467.

It is an arithmetic number, because the mean of its divisors is an integer number (2456353370592).

Almost surely, 2^{9774239453623} is an apocalyptic number.

9774239453623 is a deficient number, since it is larger than the sum of its proper divisors (51174028745).

9774239453623 is a wasteful number, since it uses less digits than its factorization.

9774239453623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51174028744.

The product of its digits is 205752960, while the sum is 64.

The spelling of 9774239453623 in words is "nine trillion, seven hundred seventy-four billion, two hundred thirty-nine million, four hundred fifty-three thousand, six hundred twenty-three".