20676785890 has 8 divisors (see below), whose sum is σ = 37218214620. Its totient is φ = 8270714352.

The previous prime is 20676785873. The next prime is 20676785903. The reversal of 20676785890 is 9858767602.

It can be written as a sum of positive squares in 2 ways, for example, as 19368010561 + 1308775329 = 139169^2 + 36177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1033839285 + ... + 1033839304.

Almost surely, 2^20676785890 is an apocalyptic number.

20676785890 is a deficient number, since it is larger than the sum of its proper divisors (16541428730).

20676785890 is a wasteful number, since it uses less digits than its factorization.

20676785890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067678596.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 20676785890 in words is "twenty billion, six hundred seventy-six million, seven hundred eighty-five thousand, eight hundred ninety".