2055420465646 has 16 divisors (see below), whose sum is σ = 3217299133824. Its totient is φ = 982990734264.

The previous prime is 2055420465643. The next prime is 2055420465647. The reversal of 2055420465646 is 6465640245502.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2055420465646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055420465643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447061 + ... + 2076223.

It is an arithmetic number, because the mean of its divisors is an integer number (201081195864).

Almost surely, 2^{2055420465646} is an apocalyptic number.

2055420465646 is a deficient number, since it is larger than the sum of its proper divisors (1161878668178).

2055420465646 is a wasteful number, since it uses less digits than its factorization.

2055420465646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656615.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 2055420465646 in words is "two trillion, fifty-five billion, four hundred twenty million, four hundred sixty-five thousand, six hundred forty-six".