1975977325444 has 24 divisors (see below), whose sum is σ = 3608680920768. Its totient is φ = 944934550560.

The previous prime is 1975977325243. The next prime is 1975977325459. The reversal of 1975977325444 is 4445237795791.

It is a super-3 number, since 3×1975977325444³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1975977325444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219462 + ... + 2000029.

It is an arithmetic number, because the mean of its divisors is an integer number (150361705032).

Almost surely, 2^{1975977325444} is an apocalyptic number.

It is an amenable number.

1975977325444 is a deficient number, since it is larger than the sum of its proper divisors (1632703595324).

1975977325444 is a wasteful number, since it uses less digits than its factorization.

1975977325444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229195 (or 2229193 counting only the distinct ones).

The product of its digits is 266716800, while the sum is 67.

The spelling of 1975977325444 in words is "one trillion, nine hundred seventy-five billion, nine hundred seventy-seven million, three hundred twenty-five thousand, four hundred forty-four".