20523673707 has 16 divisors (see below), whose sum is σ = 28867407360. Its totient is φ = 12934307232.

The previous prime is 20523673679. The next prime is 20523673739. The reversal of 20523673707 is 70737632502.

It is not a de Polignac number, because 20523673707 - 2¹⁰ = 20523672683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20523653707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362448 + ... + 415229.

It is an arithmetic number, because the mean of its divisors is an integer number (1804212960).

Almost surely, 2^20523673707 is an apocalyptic number.

20523673707 is a deficient number, since it is larger than the sum of its proper divisors (8343733653).

20523673707 is a wasteful number, since it uses less digits than its factorization.

20523673707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778162.

The product of its (nonzero) digits is 370440, while the sum is 42.

The spelling of 20523673707 in words is "twenty billion, five hundred twenty-three million, six hundred seventy-three thousand, seven hundred seven".