116666022551 has 4 divisors (see below), whose sum is σ = 125640331992. Its totient is φ = 107691713112.

The previous prime is 116666022547. The next prime is 116666022617. The reversal of 116666022551 is 155220666611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155220666611 = 19 ⋅8169508769.

It is a cyclic number.

It is not a de Polignac number, because 116666022551 - 2² = 116666022547 is a prime.

It is a super-2 number, since 2×116666022551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116666022499 and 116666022508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116666022541) 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, 4487154701 + ... + 4487154726.

It is an arithmetic number, because the mean of its divisors is an integer number (31410082998).

Almost surely, 2^116666022551 is an apocalyptic number.

116666022551 is a deficient number, since it is larger than the sum of its proper divisors (8974309441).

116666022551 is an equidigital number, since it uses as much as digits as its factorization.

116666022551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8974309440.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 116666022551 in words is "one hundred sixteen billion, six hundred sixty-six million, twenty-two thousand, five hundred fifty-one".