1623540457443 has 16 divisors (see below), whose sum is σ = 2270305103616. Its totient is φ = 1030045816800.

The previous prime is 1623540457423. The next prime is 1623540457457. The reversal of 1623540457443 is 3447540453261.

It is not a de Polignac number, because 1623540457443 - 2¹⁴ = 1623540441059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1623540457392 and 1623540457401.

It is not an unprimeable number, because it can be changed into a prime (1623540457423) 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, 59706133 + ... + 59733318.

It is an arithmetic number, because the mean of its divisors is an integer number (141894068976).

Almost surely, 2^{1623540457443} is an apocalyptic number.

1623540457443 is a deficient number, since it is larger than the sum of its proper divisors (646764646173).

1623540457443 is a wasteful number, since it uses less digits than its factorization.

1623540457443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119439674.

The product of its (nonzero) digits is 4838400, while the sum is 48.

The spelling of 1623540457443 in words is "one trillion, six hundred twenty-three billion, five hundred forty million, four hundred fifty-seven thousand, four hundred forty-three".