2154506347603 has 2 divisors, whose sum is σ = 2154506347604. Its totient is φ = 2154506347602.

The previous prime is 2154506347579. The next prime is 2154506347607. The reversal of 2154506347603 is 3067436054512.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154506347603 is a prime.

It is not a weakly prime, because it can be changed into another prime (2154506347607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077253173801 + 1077253173802.

It is an arithmetic number, because the mean of its divisors is an integer number (1077253173802).

Almost surely, 2^{2154506347603} is an apocalyptic number.

2154506347603 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154506347603 is an equidigital number, since it uses as much as digits as its factorization.

2154506347603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 2154506347603 in words is "two trillion, one hundred fifty-four billion, five hundred six million, three hundred forty-seven thousand, six hundred three".