20124418278 has 16 divisors (see below), whose sum is σ = 40251769776. Its totient is φ = 6707650560.

The previous prime is 20124418277. The next prime is 20124418313. The reversal of 20124418278 is 87281442102.

It is a super-2 number, since 2×20124418278² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124418277) 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, 27363 + ... + 202478.

It is an arithmetic number, because the mean of its divisors is an integer number (2515735611).

Almost surely, 2^20124418278 is an apocalyptic number.

20124418278 is an abundant number, since it is smaller than the sum of its proper divisors (20127351498).

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

20124418278 is a wasteful number, since it uses less digits than its factorization.

20124418278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244439.

The product of its (nonzero) digits is 57344, while the sum is 39.

The spelling of 20124418278 in words is "twenty billion, one hundred twenty-four million, four hundred eighteen thousand, two hundred seventy-eight".