11552205451 has 4 divisors (see below), whose sum is σ = 11553496192. Its totient is φ = 11550914712.

The previous prime is 11552205439. The next prime is 11552205499. The reversal of 11552205451 is 15450225511.

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

It is a cyclic number.

It is not a de Polignac number, because 11552205451 - 2⁷ = 11552205323 is a prime.

It is a super-2 number, since 2×11552205451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11552205421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631851 + ... + 649876.

It is an arithmetic number, because the mean of its divisors is an integer number (2888374048).

Almost surely, 2^11552205451 is an apocalyptic number.

11552205451 is a deficient number, since it is larger than the sum of its proper divisors (1290741).

11552205451 is an equidigital number, since it uses as much as digits as its factorization.

11552205451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290740.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 11552205451 in words is "eleven billion, five hundred fifty-two million, two hundred five thousand, four hundred fifty-one".