166254243437 has 8 divisors (see below), whose sum is σ = 167588462592. Its totient is φ = 164920417200.

The previous prime is 166254243431. The next prime is 166254243439. The reversal of 166254243437 is 734342452661.

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 166254243437 - 2¹² = 166254239341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166254243391 and 166254243400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166254243431) 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, 782987 + ... + 972407.

It is an arithmetic number, because the mean of its divisors is an integer number (20948557824).

Almost surely, 2^166254243437 is an apocalyptic number.

It is an amenable number.

166254243437 is a deficient number, since it is larger than the sum of its proper divisors (1334219155).

166254243437 is a wasteful number, since it uses less digits than its factorization.

166254243437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196459.

The product of its digits is 2903040, while the sum is 47.

The spelling of 166254243437 in words is "one hundred sixty-six billion, two hundred fifty-four million, two hundred forty-three thousand, four hundred thirty-seven".