72450032634251 has 4 divisors (see below), whose sum is σ = 76263192246600. Its totient is φ = 68636873021904.

The previous prime is 72450032634247. The next prime is 72450032634269. The reversal of 72450032634251 is 15243623005427.

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 72450032634251 - 2² = 72450032634247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72450032634451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906579806146 + ... + 1906579806183.

It is an arithmetic number, because the mean of its divisors is an integer number (19065798061650).

Almost surely, 2^{72450032634251} is an apocalyptic number.

72450032634251 is a deficient number, since it is larger than the sum of its proper divisors (3813159612349).

72450032634251 is a wasteful number, since it uses less digits than its factorization.

72450032634251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813159612348.

The product of its (nonzero) digits is 1209600, while the sum is 44.

Adding to 72450032634251 its reverse (15243623005427), we get a palindrome (87693655639678).

The spelling of 72450032634251 in words is "seventy-two trillion, four hundred fifty billion, thirty-two million, six hundred thirty-four thousand, two hundred fifty-one".