73733852421 has 8 divisors (see below), whose sum is σ = 109235336960. Its totient is φ = 49155901596.

The previous prime is 73733852393. The next prime is 73733852447. The reversal of 73733852421 is 12425833737.

It is a happy number.

73733852421 is a `hidden beast` number, since 7 + 3 + 73 + 38 + 524 + 21 = 666.

It is not a de Polignac number, because 73733852421 - 2¹⁴ = 73733836037 is a prime.

It is a super-2 number, since 2×73733852421² (a number of 23 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 (73733852321) 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, 1365441685 + ... + 1365441738.

It is an arithmetic number, because the mean of its divisors is an integer number (13654417120).

Almost surely, 2^73733852421 is an apocalyptic number.

It is an amenable number.

73733852421 is a deficient number, since it is larger than the sum of its proper divisors (35501484539).

73733852421 is a wasteful number, since it uses less digits than its factorization.

73733852421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730883432 (or 2730883426 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The spelling of 73733852421 in words is "seventy-three billion, seven hundred thirty-three million, eight hundred fifty-two thousand, four hundred twenty-one".