1320166223541 has 48 divisors (see below), whose sum is σ = 2147599613952. Its totient is φ = 774207223200.

The previous prime is 1320166223539. The next prime is 1320166223549. The reversal of 1320166223541 is 1453226610231.

1320166223541 is a `hidden beast` number, since 1 + 3 + 20 + 1 + 6 + 622 + 3 + 5 + 4 + 1 = 666.

It is not a de Polignac number, because 1320166223541 - 2¹ = 1320166223539 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1320166223496 and 1320166223505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320166223549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38968576 + ... + 39002438.

It is an arithmetic number, because the mean of its divisors is an integer number (44741658624).

Almost surely, 2^{1320166223541} is an apocalyptic number.

1320166223541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1320166223541 is a deficient number, since it is larger than the sum of its proper divisors (827433390411).

1320166223541 is a wasteful number, since it uses less digits than its factorization.

1320166223541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46614 (or 46611 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 1320166223541 in words is "one trillion, three hundred twenty billion, one hundred sixty-six million, two hundred twenty-three thousand, five hundred forty-one".