72554414345513 has 4 divisors (see below), whose sum is σ = 72557647486548. Its totient is φ = 72551181204480.

The previous prime is 72554414345507. The next prime is 72554414345527. The reversal of 72554414345513 is 31554341445527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7053443612224 + 65500970733289 = 2655832^2 + 8093267^2 .

It is a cyclic number.

It is not a de Polignac number, because 72554414345513 - 2⁶ = 72554414345449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72554414345503) 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, 1616536856 + ... + 1616581737.

It is an arithmetic number, because the mean of its divisors is an integer number (18139411871637).

Almost surely, 2^{72554414345513} is an apocalyptic number.

It is an amenable number.

72554414345513 is a deficient number, since it is larger than the sum of its proper divisors (3233141035).

72554414345513 is a wasteful number, since it uses less digits than its factorization.

72554414345513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3233141034.

The product of its digits is 20160000, while the sum is 53.

The spelling of 72554414345513 in words is "seventy-two trillion, five hundred fifty-four billion, four hundred fourteen million, three hundred forty-five thousand, five hundred thirteen".