1166724022501 has 8 divisors (see below), whose sum is σ = 1236904867800. Its totient is φ = 1096715401728.

The previous prime is 1166724022487. The next prime is 1166724022589. The reversal of 1166724022501 is 1052204276611.

It is a Cunningham number, because it is equal to 1080150²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 565765726276 + 600958296225 = 752174^2 + 775215^2 .

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 1166724022501 - 2⁹ = 1166724021989 is a prime.

It is a super-2 number, since 2×1166724022501² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166724022201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43042176 + ... + 43069273.

It is an arithmetic number, because the mean of its divisors is an integer number (154613108475).

Almost surely, 2^{1166724022501} is an apocalyptic number.

It is an amenable number.

1166724022501 is a deficient number, since it is larger than the sum of its proper divisors (70180845299).

1166724022501 is an equidigital number, since it uses as much as digits as its factorization.

1166724022501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86112263.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 1166724022501 in words is "one trillion, one hundred sixty-six billion, seven hundred twenty-four million, twenty-two thousand, five hundred one".