1550975053440 has 384 divisors, whose sum is σ = 5081899455360. Its totient is φ = 402341068800.

The previous prime is 1550975053393. The next prime is 1550975053501. The reversal of 1550975053440 is 443505790551.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1550975053440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2133390357 + ... + 2133391083.

It is an arithmetic number, because the mean of its divisors is an integer number (13234113165).

Almost surely, 2^{1550975053440} is an apocalyptic number.

1550975053440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1550975053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2540949727680).

1550975053440 is an abundant number, since it is smaller than the sum of its proper divisors (3530924401920).

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

1550975053440 is an equidigital number, since it uses as much as digits as its factorization.

1550975053440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 48.

The spelling of 1550975053440 in words is "one trillion, five hundred fifty billion, nine hundred seventy-five million, fifty-three thousand, four hundred forty".