20110555040 has 48 divisors (see below), whose sum is σ = 47554911432. Its totient is φ = 8036818944.

The previous prime is 20110555039. The next prime is 20110555043. The reversal of 20110555040 is 4055501102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18310419856 + 1800135184 = 135316^2 + 42428^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20110554997 and 20110555015.

It is not an unprimeable number, because it can be changed into a prime (20110555043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118232 + ... + 232808.

Almost surely, 2^20110555040 is an apocalyptic number.

20110555040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110555040 is an abundant number, since it is smaller than the sum of its proper divisors (27444356392).

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

20110555040 is a wasteful number, since it uses less digits than its factorization.

20110555040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115689 (or 115681 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The spelling of 20110555040 in words is "twenty billion, one hundred ten million, five hundred fifty-five thousand, forty".