1945599688745 has 16 divisors (see below), whose sum is σ = 2495649405312. Its totient is φ = 1452494355840.

The previous prime is 1945599688741. The next prime is 1945599688759. The reversal of 1945599688745 is 5478869955491.

It is not a de Polignac number, because 1945599688745 - 2² = 1945599688741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1945599688745.

It is not an unprimeable number, because it can be changed into a prime (1945599688741) 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, 206315507 + ... + 206324936.

It is an arithmetic number, because the mean of its divisors is an integer number (155978087832).

Almost surely, 2^{1945599688745} is an apocalyptic number.

It is an amenable number.

1945599688745 is a deficient number, since it is larger than the sum of its proper divisors (550049716567).

1945599688745 is a wasteful number, since it uses less digits than its factorization.

1945599688745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412640512.

The product of its digits is 3919104000, while the sum is 80.

The spelling of 1945599688745 in words is "one trillion, nine hundred forty-five billion, five hundred ninety-nine million, six hundred eighty-eight thousand, seven hundred forty-five".