20657755110 has 32 divisors (see below), whose sum is σ = 49601795040. Its totient is φ = 5506158848.

The previous prime is 20657755099. The next prime is 20657755117. The reversal of 20657755110 is 1155775602.

It is a super-2 number, since 2×20657755110² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20657755117) 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 15 ways as a sum of consecutive naturals, for example, 95325 + ... + 224504.

It is an arithmetic number, because the mean of its divisors is an integer number (1550056095).

Almost surely, 2^20657755110 is an apocalyptic number.

20657755110 is an abundant number, since it is smaller than the sum of its proper divisors (28944039930).

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

20657755110 is a wasteful number, since it uses less digits than its factorization.

20657755110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321992.

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 20657755110 in words is "twenty billion, six hundred fifty-seven million, seven hundred fifty-five thousand, one hundred ten".