11523450645551 has 8 divisors (see below), whose sum is σ = 12410861542464. Its totient is φ = 10636181408160.

The previous prime is 11523450645409. The next prime is 11523450645583. The reversal of 11523450645551 is 15554605432511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11523450645551 - 2³⁰ = 11522376903727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11523450645496 and 11523450645505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523450645151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35245895 + ... + 35571336.

It is an arithmetic number, because the mean of its divisors is an integer number (1551357692808).

Almost surely, 2^{11523450645551} is an apocalyptic number.

11523450645551 is a deficient number, since it is larger than the sum of its proper divisors (887410896913).

11523450645551 is a wasteful number, since it uses less digits than its factorization.

11523450645551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70829761.

The product of its (nonzero) digits is 1800000, while the sum is 47.

The spelling of 11523450645551 in words is "eleven trillion, five hundred twenty-three billion, four hundred fifty million, six hundred forty-five thousand, five hundred fifty-one".