1975899268044 has 336 divisors, whose sum is σ = 5836938351552. Its totient is φ = 580434978816.

The previous prime is 1975899268039. The next prime is 1975899268069. The reversal of 1975899268044 is 4408629985791.

1975899268044 is a `hidden beast` number, since 19 + 7 + 589 + 9 + 26 + 8 + 0 + 4 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 537950592 + ... + 537954264.

It is an arithmetic number, because the mean of its divisors is an integer number (17371840332).

Almost surely, 2^{1975899268044} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1975899268044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2918469175776).

1975899268044 is an abundant number, since it is smaller than the sum of its proper divisors (3861039083508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1975899268044 is a wasteful number, since it uses less digits than its factorization.

1975899268044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348 (or 4331 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 72.

The spelling of 1975899268044 in words is "one trillion, nine hundred seventy-five billion, eight hundred ninety-nine million, two hundred sixty-eight thousand, forty-four".