20124535340 has 48 divisors (see below), whose sum is σ = 52014188352. Its totient is φ = 6369083136.

The previous prime is 20124535339. The next prime is 20124535351. The reversal of 20124535340 is 4353542102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5526899 + ... + 5530538.

It is an arithmetic number, because the mean of its divisors is an integer number (1083628924).

Almost surely, 2^20124535340 is an apocalyptic number.

20124535340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20124535340 is an abundant number, since it is smaller than the sum of its proper divisors (31889653012).

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

20124535340 is a wasteful number, since it uses less digits than its factorization.

20124535340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11057466 (or 11057464 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The spelling of 20124535340 in words is "twenty billion, one hundred twenty-four million, five hundred thirty-five thousand, three hundred forty".