53503351144 has 16 divisors (see below), whose sum is σ = 102765583620. Its totient is φ = 26099195520.

The previous prime is 53503351141. The next prime is 53503351171. The reversal of 53503351144 is 44115330535.

It can be written as a sum of positive squares in 2 ways, for example, as 46337728644 + 7165622500 = 215262^2 + 84650^2 .

It is a super-2 number, since 2×53503351144² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53503351141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81559659 + ... + 81560314.

Almost surely, 2^53503351144 is an apocalyptic number.

It is an amenable number.

53503351144 is a deficient number, since it is larger than the sum of its proper divisors (49262232476).

53503351144 is a wasteful number, since it uses less digits than its factorization.

53503351144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163120020 (or 163120016 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 53503351144 its reverse (44115330535), we get a palindrome (97618681679).

The spelling of 53503351144 in words is "fifty-three billion, five hundred three million, three hundred fifty-one thousand, one hundred forty-four".