20610943761 has 8 divisors (see below), whose sum is σ = 27482109120. Its totient is φ = 13740203792.

The previous prime is 20610943757. The next prime is 20610943777. The reversal of 20610943761 is 16734901602.

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

It is a cyclic number.

It is not a de Polignac number, because 20610943761 - 2² = 20610943757 is a prime.

It is a super-2 number, since 2×20610943761² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20610943781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32671 + ... + 205643.

It is an arithmetic number, because the mean of its divisors is an integer number (3435263640).

Almost surely, 2^20610943761 is an apocalyptic number.

It is an amenable number.

20610943761 is a deficient number, since it is larger than the sum of its proper divisors (6871165359).

20610943761 is a wasteful number, since it uses less digits than its factorization.

20610943761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212695.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 20610943761 in words is "twenty billion, six hundred ten million, nine hundred forty-three thousand, seven hundred sixty-one".