20265699429492 has 96 divisors (see below), whose sum is σ = 52017229307904. Its totient is φ = 6140473210080.

The previous prime is 20265699429473. The next prime is 20265699429517. The reversal of 20265699429492 is 29492499656202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163922733 + ... + 164046315.

It is an arithmetic number, because the mean of its divisors is an integer number (541846138624).

Almost surely, 2^{20265699429492} is an apocalyptic number.

20265699429492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20265699429492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26008614653952).

20265699429492 is an abundant number, since it is smaller than the sum of its proper divisors (31751529878412).

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

20265699429492 is a wasteful number, since it uses less digits than its factorization.

20265699429492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133890 (or 133866 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 69.

The spelling of 20265699429492 in words is "twenty trillion, two hundred sixty-five billion, six hundred ninety-nine million, four hundred twenty-nine thousand, four hundred ninety-two".