72546431351 has 8 divisors (see below), whose sum is σ = 76379719680. Its totient is φ = 68714648568.

The previous prime is 72546431339. The next prime is 72546431381. The reversal of 72546431351 is 15313464527.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72546431351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72546431299 and 72546431308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72546431381) 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, 276791 + ... + 470856.

It is an arithmetic number, because the mean of its divisors is an integer number (9547464960).

Almost surely, 2^72546431351 is an apocalyptic number.

72546431351 is a deficient number, since it is larger than the sum of its proper divisors (3833288329).

72546431351 is a wasteful number, since it uses less digits than its factorization.

72546431351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752773.

The product of its digits is 302400, while the sum is 41.

Adding to 72546431351 its reverse (15313464527), we get a palindrome (87859895878).

The spelling of 72546431351 in words is "seventy-two billion, five hundred forty-six million, four hundred thirty-one thousand, three hundred fifty-one".