20120503444 has 12 divisors (see below), whose sum is σ = 35269668000. Its totient is φ = 10043455448.

The previous prime is 20120503423. The next prime is 20120503451. The reversal of 20120503444 is 44430502102.

It is a happy number.

It is a super-2 number, since 2×20120503444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196374 + ... + 4201165.

It is an arithmetic number, because the mean of its divisors is an integer number (2939139000).

Almost surely, 2^20120503444 is an apocalyptic number.

It is an amenable number.

20120503444 is a deficient number, since it is larger than the sum of its proper divisors (15149164556).

20120503444 is a wasteful number, since it uses less digits than its factorization.

20120503444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8398142 (or 8398140 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The spelling of 20120503444 in words is "twenty billion, one hundred twenty million, five hundred three thousand, four hundred forty-four".