2154555453793 has 2 divisors, whose sum is σ = 2154555453794. Its totient is φ = 2154555453792.

The previous prime is 2154555453719. The next prime is 2154555453839. The reversal of 2154555453793 is 3973545554512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2149601687104 + 4953766689 = 1466152^2 + 70383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154555453793 is a prime.

It is not a weakly prime, because it can be changed into another prime (2154555453703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077277726896 + 1077277726897.

It is an arithmetic number, because the mean of its divisors is an integer number (1077277726897).

Almost surely, 2^{2154555453793} is an apocalyptic number.

It is an amenable number.

2154555453793 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154555453793 is an equidigital number, since it uses as much as digits as its factorization.

2154555453793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700000, while the sum is 58.

The spelling of 2154555453793 in words is "two trillion, one hundred fifty-four billion, five hundred fifty-five million, four hundred fifty-three thousand, seven hundred ninety-three".