18503367020153 has 2 divisors, whose sum is σ = 18503367020154. Its totient is φ = 18503367020152.

The previous prime is 18503367020129. The next prime is 18503367020191. The reversal of 18503367020153 is 35102076330581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12740352225769 + 5763014794384 = 3569363^2 + 2400628^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18503367020153 is a prime.

It is not a weakly prime, because it can be changed into another prime (18503367020123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9251683510076 + 9251683510077.

It is an arithmetic number, because the mean of its divisors is an integer number (9251683510077).

Almost surely, 2^{18503367020153} is an apocalyptic number.

It is an amenable number.

18503367020153 is a deficient number, since it is larger than the sum of its proper divisors (1).

18503367020153 is an equidigital number, since it uses as much as digits as its factorization.

18503367020153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 18503367020153 in words is "eighteen trillion, five hundred three billion, three hundred sixty-seven million, twenty thousand, one hundred fifty-three".