72300266551 has 4 divisors (see below), whose sum is σ = 72376133472. Its totient is φ = 72224399632.

The previous prime is 72300266543. The next prime is 72300266609. The reversal of 72300266551 is 15566200327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15566200327 = 179 ⋅86962013.

It is a cyclic number.

It is not a de Polignac number, because 72300266551 - 2³ = 72300266543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72300266551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72300269551) 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, 37932031 + ... + 37933936.

It is an arithmetic number, because the mean of its divisors is an integer number (18094033368).

Almost surely, 2^72300266551 is an apocalyptic number.

72300266551 is a deficient number, since it is larger than the sum of its proper divisors (75866921).

72300266551 is an equidigital number, since it uses as much as digits as its factorization.

72300266551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75866920.

The product of its (nonzero) digits is 75600, while the sum is 37.

Adding to 72300266551 its reverse (15566200327), we get a palindrome (87866466878).

The spelling of 72300266551 in words is "seventy-two billion, three hundred million, two hundred sixty-six thousand, five hundred fifty-one".