73553307033421 has 16 divisors (see below), whose sum is σ = 78407099712000. Its totient is φ = 68758136748288.

The previous prime is 73553307033413. The next prime is 73553307033431. The reversal of 73553307033421 is 12433070335537.

It is a cyclic number.

It is not a de Polignac number, because 73553307033421 - 2³ = 73553307033413 is a prime.

It is a super-2 number, since 2×73553307033421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73553307033431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44372296 + ... + 46000078.

It is an arithmetic number, because the mean of its divisors is an integer number (4900443732000).

Almost surely, 2^{73553307033421} is an apocalyptic number.

It is an amenable number.

73553307033421 is a deficient number, since it is larger than the sum of its proper divisors (4853792678579).

73553307033421 is a wasteful number, since it uses less digits than its factorization.

73553307033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645788.

The product of its (nonzero) digits is 2381400, while the sum is 46.

Adding to 73553307033421 its reverse (12433070335537), we get a palindrome (85986377368958).

The spelling of 73553307033421 in words is "seventy-three trillion, five hundred fifty-three billion, three hundred seven million, thirty-three thousand, four hundred twenty-one".