1973443954025 has 12 divisors (see below), whose sum is σ = 2447164289244. Its totient is φ = 1578694656000.

The previous prime is 1973443954021. The next prime is 1973443954033. The reversal of 1973443954025 is 5204593443791.

It can be written as a sum of positive squares in 6 ways, for example, as 66164186176 + 1907279767849 = 257224^2 + 1381043^2 .

It is not a de Polignac number, because 1973443954025 - 2² = 1973443954021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1973443954021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 841496 + ... + 2157545.

It is an arithmetic number, because the mean of its divisors is an integer number (203930357437).

Almost surely, 2^{1973443954025} is an apocalyptic number.

It is an amenable number.

1973443954025 is a deficient number, since it is larger than the sum of its proper divisors (473720335219).

1973443954025 is a wasteful number, since it uses less digits than its factorization.

1973443954025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025372 (or 3025367 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 56.

The spelling of 1973443954025 in words is "one trillion, nine hundred seventy-three billion, four hundred forty-three million, nine hundred fifty-four thousand, twenty-five".