20763194513 has 4 divisors (see below), whose sum is σ = 21026019840. Its totient is φ = 20500369188.

The previous prime is 20763194497. The next prime is 20763194561. The reversal of 20763194513 is 31549136702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20763194513 - 2⁴ = 20763194497 is a prime.

It is a super-2 number, since 2×20763194513² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20763194113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131412545 + ... + 131412702.

It is an arithmetic number, because the mean of its divisors is an integer number (5256504960).

Almost surely, 2^20763194513 is an apocalyptic number.

It is an amenable number.

20763194513 is a deficient number, since it is larger than the sum of its proper divisors (262825327).

20763194513 is an equidigital number, since it uses as much as digits as its factorization.

20763194513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262825326.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 20763194513 in words is "twenty billion, seven hundred sixty-three million, one hundred ninety-four thousand, five hundred thirteen".