1620546057703 has 16 divisors (see below), whose sum is σ = 1674366059520. Its totient is φ = 1567529875296.

The previous prime is 1620546057661. The next prime is 1620546057709. The reversal of 1620546057703 is 3077506450261.

It is a cyclic number.

It is not a de Polignac number, because 1620546057703 - 2¹⁷ = 1620545926631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620546057709) 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, 1512226 + ... + 2351152.

It is an arithmetic number, because the mean of its divisors is an integer number (104647878720).

Almost surely, 2^{1620546057703} is an apocalyptic number.

1620546057703 is a deficient number, since it is larger than the sum of its proper divisors (53820001817).

1620546057703 is a wasteful number, since it uses less digits than its factorization.

1620546057703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839406.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 1620546057703 in words is "one trillion, six hundred twenty billion, five hundred forty-six million, fifty-seven thousand, seven hundred three".