11623320612251 has 4 divisors (see below), whose sum is σ = 11661181591752. Its totient is φ = 11585459632752.

The previous prime is 11623320612217. The next prime is 11623320612257. The reversal of 11623320612251 is 15221602332611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11623320612251 is a prime.

It is a super-2 number, since 2×11623320612251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11623320612257) 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 3 ways as a sum of consecutive naturals, for example, 18930489290 + ... + 18930489903.

It is an arithmetic number, because the mean of its divisors is an integer number (2915295397938).

Almost surely, 2^{11623320612251} is an apocalyptic number.

11623320612251 is a deficient number, since it is larger than the sum of its proper divisors (37860979501).

11623320612251 is an equidigital number, since it uses as much as digits as its factorization.

11623320612251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37860979500.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 11623320612251 its reverse (15221602332611), we get a palindrome (26844922944862).

The spelling of 11623320612251 in words is "eleven trillion, six hundred twenty-three billion, three hundred twenty million, six hundred twelve thousand, two hundred fifty-one".