11555551346 has 4 divisors (see below), whose sum is σ = 17333327022. Its totient is φ = 5777775672.

The previous prime is 11555551331. The next prime is 11555551361. The reversal of 11555551346 is 64315555511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64315555511 = 73 ⋅881035007.

It is an interprime number because it is at equal distance from previous prime (11555551331) and next prime (11555551361).

It can be written as a sum of positive squares in only one way, i.e., 10954762225 + 600789121 = 104665^2 + 24511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2888887835 + ... + 2888887838.

Almost surely, 2^11555551346 is an apocalyptic number.

11555551346 is a deficient number, since it is larger than the sum of its proper divisors (5777775676).

11555551346 is an equidigital number, since it uses as much as digits as its factorization.

11555551346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777775675.

The product of its digits is 225000, while the sum is 41.

The spelling of 11555551346 in words is "eleven billion, five hundred fifty-five million, five hundred fifty-one thousand, three hundred forty-six".