2061664672250 has 64 divisors (see below), whose sum is σ = 4004030983680. Its totient is φ = 793933537600.

The previous prime is 2061664672141. The next prime is 2061664672321. The reversal of 2061664672250 is 522764661602.

It is a super-2 number, since 2×2061664672250² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2061664672195 and 2061664672204.

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 31 ways as a sum of consecutive naturals, for example, 2105999 + ... + 2925501.

It is an arithmetic number, because the mean of its divisors is an integer number (62562984120).

Almost surely, 2^{2061664672250} is an apocalyptic number.

2061664672250 is a deficient number, since it is larger than the sum of its proper divisors (1942366311430).

2061664672250 is a wasteful number, since it uses less digits than its factorization.

2061664672250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819896 (or 819886 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 2061664672250 in words is "two trillion, sixty-one billion, six hundred sixty-four million, six hundred seventy-two thousand, two hundred fifty".