11523641404451 has 4 divisors (see below), whose sum is σ = 12571245168504. Its totient is φ = 10476037640400.

The previous prime is 11523641404447. The next prime is 11523641404453. The reversal of 11523641404451 is 15440414632511.

It is a happy number.

11523641404451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11523641404451 - 2² = 11523641404447 is a prime.

It is a super-2 number, since 2×11523641404451² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11523641404399 and 11523641404408.

It is not an unprimeable number, because it can be changed into a prime (11523641404453) 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, 523801882010 + ... + 523801882031.

It is an arithmetic number, because the mean of its divisors is an integer number (3142811292126).

Almost surely, 2^{11523641404451} is an apocalyptic number.

11523641404451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11523641404451 is a deficient number, since it is larger than the sum of its proper divisors (1047603764053).

11523641404451 is a wasteful number, since it uses less digits than its factorization.

11523641404451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047603764052.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 11523641404451 in words is "eleven trillion, five hundred twenty-three billion, six hundred forty-one million, four hundred four thousand, four hundred fifty-one".