20510102660 has 24 divisors (see below), whose sum is σ = 43074763200. Its totient is φ = 8203365344.

The previous prime is 20510102621. The next prime is 20510102689. The reversal of 20510102660 is 6620101502.

It is a super-2 number, since 2×20510102660² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259097 + ... + 328863.

It is an arithmetic number, because the mean of its divisors is an integer number (1794781800).

Almost surely, 2^20510102660 is an apocalyptic number.

20510102660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20510102660 is an abundant number, since it is smaller than the sum of its proper divisors (22564660540).

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

20510102660 is a wasteful number, since it uses less digits than its factorization.

20510102660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84475 (or 84473 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The spelling of 20510102660 in words is "twenty billion, five hundred ten million, one hundred two thousand, six hundred sixty".