20767046613 has 4 divisors (see below), whose sum is σ = 27689395488. Its totient is φ = 13844697740.

The previous prime is 20767046611. The next prime is 20767046659. The reversal of 20767046613 is 31664076702.

It is a happy number.

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 20767046613 - 2¹ = 20767046611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20767046611) 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, 3461174433 + ... + 3461174438.

It is an arithmetic number, because the mean of its divisors is an integer number (6922348872).

Almost surely, 2^20767046613 is an apocalyptic number.

It is an amenable number.

20767046613 is a deficient number, since it is larger than the sum of its proper divisors (6922348875).

20767046613 is an equidigital number, since it uses as much as digits as its factorization.

20767046613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922348874.

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 20767046613 in words is "twenty billion, seven hundred sixty-seven million, forty-six thousand, six hundred thirteen".