20506622115507 has 16 divisors (see below), whose sum is σ = 30205381255680. Its totient is φ = 12270936132000.

The previous prime is 20506622115503. The next prime is 20506622115517. The reversal of 20506622115507 is 70551122660502.

It is not a de Polignac number, because 20506622115507 - 2² = 20506622115503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20506622115503) 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, 3932989744 + ... + 3932994957.

It is an arithmetic number, because the mean of its divisors is an integer number (1887836328480).

Almost surely, 2^{20506622115507} is an apocalyptic number.

20506622115507 is a deficient number, since it is larger than the sum of its proper divisors (9698759140173).

20506622115507 is a wasteful number, since it uses less digits than its factorization.

20506622115507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7865984794.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 20506622115507 in words is "twenty trillion, five hundred six billion, six hundred twenty-two million, one hundred fifteen thousand, five hundred seven".