11451661112534 has 4 divisors (see below), whose sum is σ = 17177491668804. Its totient is φ = 5725830556266.

The previous prime is 11451661112501. The next prime is 11451661112569. The reversal of 11451661112534 is 43521116615411.

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

It is a super-2 number, since 2×11451661112534² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11451661112491 and 11451661112500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2862915278132 + ... + 2862915278135.

It is an arithmetic number, because the mean of its divisors is an integer number (4294372917201).

Almost surely, 2^{11451661112534} is an apocalyptic number.

11451661112534 is a deficient number, since it is larger than the sum of its proper divisors (5725830556270).

11451661112534 is an equidigital number, since it uses as much as digits as its factorization.

11451661112534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5725830556269.

The product of its digits is 86400, while the sum is 41.

Adding to 11451661112534 its reverse (43521116615411), we get a palindrome (54972777727945).

The spelling of 11451661112534 in words is "eleven trillion, four hundred fifty-one billion, six hundred sixty-one million, one hundred twelve thousand, five hundred thirty-four".