1421780135886 has 48 divisors (see below), whose sum is σ = 3360824466480. Its totient is φ = 430809999360.

The previous prime is 1421780135879. The next prime is 1421780135917. The reversal of 1421780135886 is 6885310871241.

1421780135886 is a `hidden beast` number, since 1 + 42 + 1 + 7 + 8 + 0 + 13 + 588 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2431630 + ... + 2959118.

It is an arithmetic number, because the mean of its divisors is an integer number (70017176385).

Almost surely, 2^{1421780135886} is an apocalyptic number.

1421780135886 is an abundant number, since it is smaller than the sum of its proper divisors (1939044330594).

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

1421780135886 is a wasteful number, since it uses less digits than its factorization.

1421780135886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541121 (or 541118 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 1421780135886 in words is "one trillion, four hundred twenty-one billion, seven hundred eighty million, one hundred thirty-five thousand, eight hundred eighty-six".