20013010320 has 40 divisors (see below), whose sum is σ = 62040332736. Its totient is φ = 5336802688.

The previous prime is 20013010273. The next prime is 20013010321. The reversal of 20013010320 is 2301031002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20013010296 and 20013010305.

It is not an unprimeable number, because it can be changed into a prime (20013010321) 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, 41693532 + ... + 41694011.

Almost surely, 2^20013010320 is an apocalyptic number.

20013010320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013010320 is an abundant number, since it is smaller than the sum of its proper divisors (42027322416).

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

20013010320 is a wasteful number, since it uses less digits than its factorization.

20013010320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83387559 (or 83387553 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20013010320 its reverse (2301031002), we get a palindrome (22314041322).

The spelling of 20013010320 in words is "twenty billion, thirteen million, ten thousand, three hundred twenty".