1421166471165 has 192 divisors, whose sum is σ = 3009459548160. Its totient is φ = 606398607360.

The previous prime is 1421166471161. The next prime is 1421166471169. The reversal of 1421166471165 is 5611746611241.

1421166471165 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 16 + 6 + 471 + 165 = 666.

It is an interprime number because it is at equal distance from previous prime (1421166471161) and next prime (1421166471169).

It is not a de Polignac number, because 1421166471165 - 2² = 1421166471161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1421166471165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421166471161) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 350297817 + ... + 350301873.

It is an arithmetic number, because the mean of its divisors is an integer number (15674268480).

Almost surely, 2^{1421166471165} is an apocalyptic number.

1421166471165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1421166471165 is an abundant number, since it is smaller than the sum of its proper divisors (1588293076995).

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

1421166471165 is a wasteful number, since it uses less digits than its factorization.

1421166471165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372 (or 5369 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 1421166471165 in words is "one trillion, four hundred twenty-one billion, one hundred sixty-six million, four hundred seventy-one thousand, one hundred sixty-five".