13555340221474 has 4 divisors (see below), whose sum is σ = 20333010332214. Its totient is φ = 6777670110736.

The previous prime is 13555340221453. The next prime is 13555340221483. The reversal of 13555340221474 is 47412204355531.

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

It can be written as a sum of positive squares in only one way, i.e., 12746792170225 + 808548051249 = 3570265^2 + 899193^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3388835055367 + ... + 3388835055370.

Almost surely, 2^{13555340221474} is an apocalyptic number.

13555340221474 is a deficient number, since it is larger than the sum of its proper divisors (6777670110740).

13555340221474 is an equidigital number, since it uses as much as digits as its factorization.

13555340221474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6777670110739.

The product of its (nonzero) digits is 2016000, while the sum is 46.

The spelling of 13555340221474 in words is "thirteen trillion, five hundred fifty-five billion, three hundred forty million, two hundred twenty-one thousand, four hundred seventy-four".