20423045370 has 256 divisors, whose sum is σ = 64522386432. Its totient is φ = 4014489600.

The previous prime is 20423045359. The next prime is 20423045399. The reversal of 20423045370 is 7354032402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4685232 + ... + 4689588.

It is an arithmetic number, because the mean of its divisors is an integer number (252040572).

Almost surely, 2^20423045370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20423045370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32261193216).

20423045370 is an abundant number, since it is smaller than the sum of its proper divisors (44099341062).

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

20423045370 is a wasteful number, since it uses less digits than its factorization.

20423045370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505.

The product of its (nonzero) digits is 20160, while the sum is 30.

Adding to 20423045370 its reverse (7354032402), we get a palindrome (27777077772).

The spelling of 20423045370 in words is "twenty billion, four hundred twenty-three million, forty-five thousand, three hundred seventy".