20763613445 has 8 divisors (see below), whose sum is σ = 24933805344. Its totient is φ = 16599244624.

The previous prime is 20763613439. The next prime is 20763613447. The reversal of 20763613445 is 54431636702.

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 20763613445 - 2²⁰ = 20762564869 is a prime.

It is a super-2 number, since 2×20763613445² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20763613447) by changing a digit.

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, 1447919 + ... + 1462188.

It is an arithmetic number, because the mean of its divisors is an integer number (3116725668).

Almost surely, 2^20763613445 is an apocalyptic number.

It is an amenable number.

20763613445 is a deficient number, since it is larger than the sum of its proper divisors (4170191899).

20763613445 is a wasteful number, since it uses less digits than its factorization.

20763613445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911539.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 20763613445 in words is "twenty billion, seven hundred sixty-three million, six hundred thirteen thousand, four hundred forty-five".