72451122341 has 8 divisors (see below), whose sum is σ = 78027882744. Its totient is φ = 66874875840.

The previous prime is 72451122329. The next prime is 72451122343. The reversal of 72451122341 is 14322115427.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14720968900 + 57730153441 = 121330^2 + 240271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72451122341 - 2³⁰ = 71377380517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72451122298 and 72451122307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72451122343) 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, 194411 + ... + 427431.

It is an arithmetic number, because the mean of its divisors is an integer number (9753485343).

Almost surely, 2^72451122341 is an apocalyptic number.

It is an amenable number.

72451122341 is a deficient number, since it is larger than the sum of its proper divisors (5576760403).

72451122341 is a wasteful number, since it uses less digits than its factorization.

72451122341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256951.

The product of its digits is 13440, while the sum is 32.

Adding to 72451122341 its reverse (14322115427), we get a palindrome (86773237768).

The spelling of 72451122341 in words is "seventy-two billion, four hundred fifty-one million, one hundred twenty-two thousand, three hundred forty-one".