2166624264231 has 24 divisors (see below), whose sum is σ = 3649642432800. Its totient is φ = 1238071006368.

The previous prime is 2166624264229. The next prime is 2166624264253. The reversal of 2166624264231 is 1324624266612.

It is a happy number.

It is not a de Polignac number, because 2166624264231 - 2¹ = 2166624264229 is a prime.

It is a super-2 number, since 2×2166624264231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166624264031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350924070 + ... + 350930243.

It is an arithmetic number, because the mean of its divisors is an integer number (152068434700).

Almost surely, 2^{2166624264231} is an apocalyptic number.

2166624264231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2166624264231 is a deficient number, since it is larger than the sum of its proper divisors (1483018168569).

2166624264231 is an equidigital number, since it uses as much as digits as its factorization.

2166624264231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701854340 (or 701854323 counting only the distinct ones).

The product of its digits is 995328, while the sum is 45.

The spelling of 2166624264231 in words is "two trillion, one hundred sixty-six billion, six hundred twenty-four million, two hundred sixty-four thousand, two hundred thirty-one".