20345255310 has 16 divisors (see below), whose sum is σ = 48828612816. Its totient is φ = 5425401408.

The previous prime is 20345255269. The next prime is 20345255317. The reversal of 20345255310 is 1355254302.

It is a super-2 number, since 2×20345255310² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 678175177 = 20345255310 / (2 + 0 + 3 + 4 + 5 + 2 + 5 + 5 + 3 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345255317) 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, 339087559 + ... + 339087618.

It is an arithmetic number, because the mean of its divisors is an integer number (3051788301).

Almost surely, 2^20345255310 is an apocalyptic number.

20345255310 is an abundant number, since it is smaller than the sum of its proper divisors (28483357506).

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

20345255310 is a wasteful number, since it uses less digits than its factorization.

20345255310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678175187.

The product of its (nonzero) digits is 18000, while the sum is 30.

The spelling of 20345255310 in words is "twenty billion, three hundred forty-five million, two hundred fifty-five thousand, three hundred ten".