13455721754 has 4 divisors (see below), whose sum is σ = 20183582634. Its totient is φ = 6727860876.

The previous prime is 13455721729. The next prime is 13455721787. The reversal of 13455721754 is 45712755431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45712755431 = 7 ⋅6530393633.

It can be written as a sum of positive squares in only one way, i.e., 9403762729 + 4051959025 = 96973^2 + 63655^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3363930437 + ... + 3363930440.

Almost surely, 2^13455721754 is an apocalyptic number.

13455721754 is a deficient number, since it is larger than the sum of its proper divisors (6727860880).

13455721754 is an equidigital number, since it uses as much as digits as its factorization.

13455721754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6727860879.

The product of its digits is 588000, while the sum is 44.

The spelling of 13455721754 in words is "thirteen billion, four hundred fifty-five million, seven hundred twenty-one thousand, seven hundred fifty-four".