20342545113550 has 72 divisors (see below), whose sum is σ = 41592167618400. Its totient is φ = 7396828348800.

The previous prime is 20342545113493. The next prime is 20342545113551. The reversal of 20342545113550 is 5531154524302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342545113551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 105893986 + ... + 106085914.

It is an arithmetic number, because the mean of its divisors is an integer number (577668994700).

Almost surely, 2^{20342545113550} is an apocalyptic number.

20342545113550 is an abundant number, since it is smaller than the sum of its proper divisors (21249622504850).

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

20342545113550 is a wasteful number, since it uses less digits than its factorization.

20342545113550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209482 (or 209466 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 40.

Adding to 20342545113550 its reverse (5531154524302), we get a palindrome (25873699637852).

The spelling of 20342545113550 in words is "twenty trillion, three hundred forty-two billion, five hundred forty-five million, one hundred thirteen thousand, five hundred fifty".