21004014005010 has 32 divisors (see below), whose sum is σ = 56010704014080. Its totient is φ = 5601070401264.

The previous prime is 21004014004957. The next prime is 21004014005021. The reversal of 21004014005010 is 1050041040012.

21004014005010 is a `hidden beast` number, since 21 + 0 + 0 + 4 + 0 + 140 + 0 + 501 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 38896321962 + ... + 38896322501.

It is an arithmetic number, because the mean of its divisors is an integer number (1750334500440).

Almost surely, 2^{21004014005010} is an apocalyptic number.

21004014005010 is an abundant number, since it is smaller than the sum of its proper divisors (35006690009070).

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

21004014005010 is a wasteful number, since it uses less digits than its factorization.

21004014005010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77792644479 (or 77792644473 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 21004014005010 its reverse (1050041040012), we get a palindrome (22054055045022).

The spelling of 21004014005010 in words is "twenty-one trillion, four billion, fourteen million, five thousand, ten".