20079523144 has 8 divisors (see below), whose sum is σ = 37649105910. Its totient is φ = 10039761568.

The previous prime is 20079523127. The next prime is 20079523169. The reversal of 20079523144 is 44132597002.

It can be written as a sum of positive squares in only one way, i.e., 20076056100 + 3467044 = 141690^2 + 1862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254970189 + ... + 1254970204.

Almost surely, 2^20079523144 is an apocalyptic number.

It is an amenable number.

20079523144 is a deficient number, since it is larger than the sum of its proper divisors (17569582766).

20079523144 is a wasteful number, since it uses less digits than its factorization.

20079523144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509940399 (or 2509940395 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 20079523144 in words is "twenty billion, seventy-nine million, five hundred twenty-three thousand, one hundred forty-four".