1420657784055 has 64 divisors (see below), whose sum is σ = 2622656211840. Its totient is φ = 729077760000.

The previous prime is 1420657784053. The next prime is 1420657784071. The reversal of 1420657784055 is 5504877560241.

It is a happy number.

1420657784055 is a `hidden beast` number, since 1 + 4 + 20 + 6 + 577 + 8 + 40 + 5 + 5 = 666.

It is not a de Polignac number, because 1420657784055 - 2¹ = 1420657784053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420657783992 and 1420657784010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420657784053) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1353946 + ... + 2162055.

It is an arithmetic number, because the mean of its divisors is an integer number (40979003310).

Almost surely, 2^{1420657784055} is an apocalyptic number.

1420657784055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1420657784055 is a deficient number, since it is larger than the sum of its proper divisors (1201998427785).

1420657784055 is a wasteful number, since it uses less digits than its factorization.

1420657784055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516129 (or 3516123 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 54.

The spelling of 1420657784055 in words is "one trillion, four hundred twenty billion, six hundred fifty-seven million, seven hundred eighty-four thousand, fifty-five".