72145588554127 has 4 divisors (see below), whose sum is σ = 78704278422696. Its totient is φ = 65586898685560.

The previous prime is 72145588554119. The next prime is 72145588554157.

It is a happy number.

72145588554127 is nontrivially palindromic in base 10.

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 72145588554127 - 2³ = 72145588554119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72145588554107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3279344934268 + ... + 3279344934289.

It is an arithmetic number, because the mean of its divisors is an integer number (19676069605674).

Almost surely, 2^{72145588554127} is an apocalyptic number.

72145588554127 is a deficient number, since it is larger than the sum of its proper divisors (6558689868569).

72145588554127 is a wasteful number, since it uses less digits than its factorization.

72145588554127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6558689868568.

The product of its digits is 125440000, while the sum is 64.

The spelling of 72145588554127 in words is "seventy-two trillion, one hundred forty-five billion, five hundred eighty-eight million, five hundred fifty-four thousand, one hundred twenty-seven".