20308768007 has 4 divisors (see below), whose sum is σ = 22155019656. Its totient is φ = 18462516360.

The previous prime is 20308768001. The next prime is 20308768031. The reversal of 20308768007 is 70086780302.

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

It is a cyclic number.

It is not a de Polignac number, because 20308768007 - 2⁶ = 20308767943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20308768001) 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, 923125808 + ... + 923125829.

It is an arithmetic number, because the mean of its divisors is an integer number (5538754914).

Almost surely, 2^20308768007 is an apocalyptic number.

20308768007 is a deficient number, since it is larger than the sum of its proper divisors (1846251649).

20308768007 is a wasteful number, since it uses less digits than its factorization.

20308768007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846251648.

The product of its (nonzero) digits is 112896, while the sum is 41.

The spelling of 20308768007 in words is "twenty billion, three hundred eight million, seven hundred sixty-eight thousand, seven".