11553021451 has 16 divisors (see below), whose sum is σ = 12275167968. Its totient is φ = 10857888000.

The previous prime is 11553021427. The next prime is 11553021481. The reversal of 11553021451 is 15412035511.

It is a cyclic number.

It is not a de Polignac number, because 11553021451 - 2⁷ = 11553021323 is a prime.

It is a super-2 number, since 2×11553021451² (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 (11553021481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115516 + ... + 190918.

It is an arithmetic number, because the mean of its divisors is an integer number (767197998).

Almost surely, 2^11553021451 is an apocalyptic number.

11553021451 is a deficient number, since it is larger than the sum of its proper divisors (722146517).

11553021451 is a wasteful number, since it uses less digits than its factorization.

11553021451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75582.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 11553021451 its reverse (15412035511), we get a palindrome (26965056962).

The spelling of 11553021451 in words is "eleven billion, five hundred fifty-three million, twenty-one thousand, four hundred fifty-one".