1642443939255 has 32 divisors (see below), whose sum is σ = 3005436893184. Its totient is φ = 750303806976.

The previous prime is 1642443939229. The next prime is 1642443939299. The reversal of 1642443939255 is 5529393442461.

It is not a de Polignac number, because 1642443939255 - 2¹⁰ = 1642443938231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642443939195 and 1642443939204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5346834 + ... + 5645663.

It is an arithmetic number, because the mean of its divisors is an integer number (93919902912).

Almost surely, 2^{1642443939255} is an apocalyptic number.

1642443939255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1642443939255 is a deficient number, since it is larger than the sum of its proper divisors (1362992953929).

1642443939255 is a wasteful number, since it uses less digits than its factorization.

1642443939255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10993935.

The product of its digits is 27993600, while the sum is 57.

The spelling of 1642443939255 in words is "one trillion, six hundred forty-two billion, four hundred forty-three million, nine hundred thirty-nine thousand, two hundred fifty-five".