73422131551 has 4 divisors (see below), whose sum is σ = 73433561992. Its totient is φ = 73410701112.

The previous prime is 73422131543. The next prime is 73422131579. The reversal of 73422131551 is 15513122437.

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

It is a cyclic number.

It is not a de Polignac number, because 73422131551 - 2³ = 73422131543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73422131591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5705580 + ... + 5718433.

It is an arithmetic number, because the mean of its divisors is an integer number (18358390498).

Almost surely, 2^73422131551 is an apocalyptic number.

73422131551 is a deficient number, since it is larger than the sum of its proper divisors (11430441).

73422131551 is a wasteful number, since it uses less digits than its factorization.

73422131551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11430440.

The product of its digits is 25200, while the sum is 34.

Adding to 73422131551 its reverse (15513122437), we get a palindrome (88935253988).

The spelling of 73422131551 in words is "seventy-three billion, four hundred twenty-two million, one hundred thirty-one thousand, five hundred fifty-one".