20465619126 has 16 divisors (see below), whose sum is σ = 40941516528. Its totient is φ = 6820160000.

The previous prime is 20465619113. The next prime is 20465619127. The reversal of 20465619126 is 62191656402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20465619127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402255 + ... + 450266.

It is an arithmetic number, because the mean of its divisors is an integer number (2558844783).

Almost surely, 2^20465619126 is an apocalyptic number.

20465619126 is an abundant number, since it is smaller than the sum of its proper divisors (20475897402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20465619126 is a wasteful number, since it uses less digits than its factorization.

20465619126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856527.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 20465619126 in words is "twenty billion, four hundred sixty-five million, six hundred nineteen thousand, one hundred twenty-six".