20488610736667 has 4 divisors (see below), whose sum is σ = 20488672059160. Its totient is φ = 20488549414176.

The previous prime is 20488610736647. The next prime is 20488610736673. The reversal of 20488610736667 is 76663701688402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20488610736667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20488610736599 and 20488610736608.

It is not an unprimeable number, because it can be changed into a prime (20488610736647) 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, 30157317 + ... + 30829222.

It is an arithmetic number, because the mean of its divisors is an integer number (5122168014790).

Almost surely, 2^{20488610736667} is an apocalyptic number.

20488610736667 is a deficient number, since it is larger than the sum of its proper divisors (61322493).

20488610736667 is an equidigital number, since it uses as much as digits as its factorization.

20488610736667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61322492.

The product of its (nonzero) digits is 97542144, while the sum is 64.

The spelling of 20488610736667 in words is "twenty trillion, four hundred eighty-eight billion, six hundred ten million, seven hundred thirty-six thousand, six hundred sixty-seven".