11543662351 has 4 divisors (see below), whose sum is σ = 12431636392. Its totient is φ = 10655688312.

The previous prime is 11543662343. The next prime is 11543662373. The reversal of 11543662351 is 15326634511.

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 11543662351 - 2³ = 11543662343 is a prime.

It is a super-2 number, since 2×11543662351² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11543662351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543662391) 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, 443987001 + ... + 443987026.

It is an arithmetic number, because the mean of its divisors is an integer number (3107909098).

Almost surely, 2^11543662351 is an apocalyptic number.

11543662351 is a deficient number, since it is larger than the sum of its proper divisors (887974041).

11543662351 is an equidigital number, since it uses as much as digits as its factorization.

11543662351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887974040.

The product of its digits is 64800, while the sum is 37.

The spelling of 11543662351 in words is "eleven billion, five hundred forty-three million, six hundred sixty-two thousand, three hundred fifty-one".