73451178340 has 12 divisors (see below), whose sum is σ = 154247474556. Its totient is φ = 29380471328.

The previous prime is 73451178259. The next prime is 73451178341. The reversal of 73451178340 is 4387115437.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23014103616 + 50437074724 = 151704^2 + 224582^2 .

It is not an unprimeable number, because it can be changed into a prime (73451178341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836279439 + ... + 1836279478.

It is an arithmetic number, because the mean of its divisors is an integer number (12853956213).

Almost surely, 2^73451178340 is an apocalyptic number.

It is an amenable number.

73451178340 is an abundant number, since it is smaller than the sum of its proper divisors (80796296216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73451178340 is a wasteful number, since it uses less digits than its factorization.

73451178340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672558926 (or 3672558924 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 73451178340 in words is "seventy-three billion, four hundred fifty-one million, one hundred seventy-eight thousand, three hundred forty".