20274123380 has 72 divisors (see below), whose sum is σ = 51124502016. Its totient is φ = 6726888000.

The previous prime is 20274123379. The next prime is 20274123407. The reversal of 20274123380 is 8332147202.

It is a super-2 number, since 2×20274123380² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303296 + ... + 364055.

It is an arithmetic number, because the mean of its divisors is an integer number (710062528).

Almost surely, 2^20274123380 is an apocalyptic number.

20274123380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20274123380 is an abundant number, since it is smaller than the sum of its proper divisors (30850378636).

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

20274123380 is a wasteful number, since it uses less digits than its factorization.

20274123380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667405 (or 667396 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 20274123380 in words is "twenty billion, two hundred seventy-four million, one hundred twenty-three thousand, three hundred eighty".