2161453603124 has 48 divisors (see below), whose sum is σ = 3922745274000. Its totient is φ = 1041372672000.

The previous prime is 2161453603123. The next prime is 2161453603151. The reversal of 2161453603124 is 4213063541612.

It can be written as a sum of positive squares in 8 ways, for example, as 106875378724 + 2054578224400 = 326918^2 + 1433380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161453603123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6615152 + ... + 6934200.

It is an arithmetic number, because the mean of its divisors is an integer number (81723859875).

Almost surely, 2^{2161453603124} is an apocalyptic number.

It is an amenable number.

2161453603124 is a deficient number, since it is larger than the sum of its proper divisors (1761291670876).

2161453603124 is a wasteful number, since it uses less digits than its factorization.

2161453603124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319604 (or 319602 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 2161453603124 in words is "two trillion, one hundred sixty-one billion, four hundred fifty-three million, six hundred three thousand, one hundred twenty-four".