20344667380 has 24 divisors (see below), whose sum is σ = 45236967048. Its totient is φ = 7659168768.

The previous prime is 20344667341. The next prime is 20344667401. The reversal of 20344667380 is 8376644302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 417957136 + 19926710244 = 20444^2 + 141162^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29918289 + ... + 29918968.

It is an arithmetic number, because the mean of its divisors is an integer number (1884873627).

Almost surely, 2^20344667380 is an apocalyptic number.

20344667380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344667380 is an abundant number, since it is smaller than the sum of its proper divisors (24892299668).

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

20344667380 is a wasteful number, since it uses less digits than its factorization.

20344667380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59837283 (or 59837281 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 20344667380 in words is "twenty billion, three hundred forty-four million, six hundred sixty-seven thousand, three hundred eighty".