1421186775750 has 672 divisors, whose sum is σ = 4749303914784. Its totient is φ = 317202480000.

The previous prime is 1421186775739. The next prime is 1421186775769. The reversal of 1421186775750 is 575776811241.

It is a happy number.

1421186775750 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 1 + 8 + 67 + 7 + 575 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 383998900 + ... + 384002600.

Almost surely, 2^{1421186775750} is an apocalyptic number.

1421186775750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421186775750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2374651957392).

1421186775750 is an abundant number, since it is smaller than the sum of its proper divisors (3328117139034).

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

1421186775750 is an equidigital number, since it uses as much as digits as its factorization.

1421186775750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793 (or 3761 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 54.

The spelling of 1421186775750 in words is "one trillion, four hundred twenty-one billion, one hundred eighty-six million, seven hundred seventy-five thousand, seven hundred fifty".