13751220458 has 4 divisors (see below), whose sum is σ = 20626830690. Its totient is φ = 6875610228.

The previous prime is 13751220451. The next prime is 13751220463. The reversal of 13751220458 is 85402215731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85402215731 = 7 ⋅12200316533.

It can be written as a sum of positive squares in only one way, i.e., 13515690049 + 235530409 = 116257^2 + 15347^2 .

It is not an unprimeable number, because it can be changed into a prime (13751220451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3437805113 + ... + 3437805116.

Almost surely, 2^13751220458 is an apocalyptic number.

13751220458 is a deficient number, since it is larger than the sum of its proper divisors (6875610232).

13751220458 is an equidigital number, since it uses as much as digits as its factorization.

13751220458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875610231.

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 13751220458 in words is "thirteen billion, seven hundred fifty-one million, two hundred twenty thousand, four hundred fifty-eight".