1953778259752 has 32 divisors (see below), whose sum is σ = 3997404141120. Its totient is φ = 887850023040.

The previous prime is 1953778259749. The next prime is 1953778259779. The reversal of 1953778259752 is 2579528773591.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547093 + ... + 3224164.

It is an arithmetic number, because the mean of its divisors is an integer number (124918879410).

Almost surely, 2^{1953778259752} is an apocalyptic number.

It is an amenable number.

1953778259752 is an abundant number, since it is smaller than the sum of its proper divisors (2043625881368).

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

1953778259752 is a wasteful number, since it uses less digits than its factorization.

1953778259752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5775121 (or 5775117 counting only the distinct ones).

The product of its digits is 333396000, while the sum is 70.

The spelling of 1953778259752 in words is "one trillion, nine hundred fifty-three billion, seven hundred seventy-eight million, two hundred fifty-nine thousand, seven hundred fifty-two".