20307751144 has 32 divisors (see below), whose sum is σ = 38782195200. Its totient is φ = 9967083840.

The previous prime is 20307751141. The next prime is 20307751327. The reversal of 20307751144 is 44115770302.

It is not an unprimeable number, because it can be changed into a prime (20307751141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52009 + ... + 208135.

It is an arithmetic number, because the mean of its divisors is an integer number (1211943600).

Almost surely, 2^20307751144 is an apocalyptic number.

It is an amenable number.

20307751144 is a deficient number, since it is larger than the sum of its proper divisors (18474444056).

20307751144 is a wasteful number, since it uses less digits than its factorization.

20307751144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156433 (or 156429 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The spelling of 20307751144 in words is "twenty billion, three hundred seven million, seven hundred fifty-one thousand, one hundred forty-four".