2055475917438 has 64 divisors (see below), whose sum is σ = 4259185569792. Its totient is φ = 660803425920.

The previous prime is 2055475917431. The next prime is 2055475917449. The reversal of 2055475917438 is 8347195745502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2055475917431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11914120 + ... + 12085412.

It is an arithmetic number, because the mean of its divisors is an integer number (66549774528).

Almost surely, 2^{2055475917438} is an apocalyptic number.

2055475917438 is an abundant number, since it is smaller than the sum of its proper divisors (2203709652354).

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

2055475917438 is a wasteful number, since it uses less digits than its factorization.

2055475917438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171809.

The product of its (nonzero) digits is 42336000, while the sum is 60.

The spelling of 2055475917438 in words is "two trillion, fifty-five billion, four hundred seventy-five million, nine hundred seventeen thousand, four hundred thirty-eight".