10206440423055 has 128 divisors (see below), whose sum is σ = 19621666022400. Its totient is φ = 5014767439872.

The previous prime is 10206440422991. The next prime is 10206440423071. The reversal of 10206440423055 is 55032404460201.

10206440423055 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 644 + 0 + 4 + 2 + 3 + 0 + 5 + 5 = 666.

It is not a de Polignac number, because 10206440423055 - 2⁶ = 10206440422991 is a prime.

It is a super-2 number, since 2×10206440423055² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 31387612 + ... + 31711118.

It is an arithmetic number, because the mean of its divisors is an integer number (153294265800).

Almost surely, 2^{10206440423055} is an apocalyptic number.

10206440423055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10206440423055 is a deficient number, since it is larger than the sum of its proper divisors (9415225599345).

10206440423055 is a wasteful number, since it uses less digits than its factorization.

10206440423055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323830 (or 323824 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 10206440423055 its reverse (55032404460201), we get a palindrome (65238844883256).

The spelling of 10206440423055 in words is "ten trillion, two hundred six billion, four hundred forty million, four hundred twenty-three thousand, fifty-five".