21045406655110 has 32 divisors (see below), whose sum is σ = 37939849695072. Its totient is φ = 8405250201600.

The previous prime is 21045406655089. The next prime is 21045406655153. The reversal of 21045406655110 is 1155660454012.

It is a super-2 number, since 2×21045406655110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67048294 + ... + 67361446.

It is an arithmetic number, because the mean of its divisors is an integer number (1185620302971).

Almost surely, 2^{21045406655110} is an apocalyptic number.

21045406655110 is a deficient number, since it is larger than the sum of its proper divisors (16894443039962).

21045406655110 is a wasteful number, since it uses less digits than its factorization.

21045406655110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323448.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 21045406655110 in words is "twenty-one trillion, forty-five billion, four hundred six million, six hundred fifty-five thousand, one hundred ten".