20144864376 has 128 divisors (see below), whose sum is σ = 68871398400. Its totient is φ = 5312926080.

The previous prime is 20144864359. The next prime is 20144864449. The reversal of 20144864376 is 67346844102.

20144864376 is a `hidden beast` number, since 201 + 4 + 4 + 8 + 6 + 437 + 6 = 666.

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 31 ways as a sum of consecutive naturals, for example, 492780 + ... + 532091.

It is an arithmetic number, because the mean of its divisors is an integer number (538057800).

Almost surely, 2^20144864376 is an apocalyptic number.

20144864376 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20144864376 is an abundant number, since it is smaller than the sum of its proper divisors (48726534024).

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

20144864376 is a wasteful number, since it uses less digits than its factorization.

20144864376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024906 (or 1024896 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 20144864376 in words is "twenty billion, one hundred forty-four million, eight hundred sixty-four thousand, three hundred seventy-six".