3773243555421 has 24 divisors (see below), whose sum is σ = 5281246266240. Its totient is φ = 2396058610176.

The previous prime is 3773243555407. The next prime is 3773243555423. The reversal of 3773243555421 is 1245553423773.

It is not a de Polignac number, because 3773243555421 - 2²⁷ = 3773109337693 is a prime.

It is a super-2 number, since 2×3773243555421² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3773243555423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4594756 + ... + 5353341.

It is an arithmetic number, because the mean of its divisors is an integer number (220051927760).

Almost surely, 2^{3773243555421} is an apocalyptic number.

It is an amenable number.

3773243555421 is a deficient number, since it is larger than the sum of its proper divisors (1508002710819).

3773243555421 is a wasteful number, since it uses less digits than its factorization.

3773243555421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948385 (or 9948362 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 51.

The spelling of 3773243555421 in words is "three trillion, seven hundred seventy-three billion, two hundred forty-three million, five hundred fifty-five thousand, four hundred twenty-one".