2061651356 has 12 divisors (see below), whose sum is σ = 3614791992. Its totient is φ = 1028853648.

The previous prime is 2061651349. The next prime is 2061651367. The reversal of 2061651356 is 6531561602.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 490655 + ... + 494838.

It is an arithmetic number, because the mean of its divisors is an integer number (301232666).

Almost surely, 2^2061651356 is an apocalyptic number.

It is an amenable number.

2061651356 is a deficient number, since it is larger than the sum of its proper divisors (1553140636).

2061651356 is a wasteful number, since it uses less digits than its factorization.

2061651356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986020 (or 986018 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 2061651356 is about 45405.4110872262. The cubic root of 2061651356 is about 1272.7362329048.

The spelling of 2061651356 in words is "two billion, sixty-one million, six hundred fifty-one thousand, three hundred fifty-six".