53181351272 has 64 divisors (see below), whose sum is σ = 125173555200. Its totient is φ = 20653617600.

The previous prime is 53181351269. The next prime is 53181351313. The reversal of 53181351272 is 27215318135.

It is a happy number.

It is a super-2 number, since 2×53181351272² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062104 + ... + 1111047.

It is an arithmetic number, because the mean of its divisors is an integer number (1955836800).

Almost surely, 2^53181351272 is an apocalyptic number.

It is an amenable number.

53181351272 is an abundant number, since it is smaller than the sum of its proper divisors (71992203928).

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

53181351272 is a wasteful number, since it uses less digits than its factorization.

53181351272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173206 (or 2173202 counting only the distinct ones).

The product of its digits is 50400, while the sum is 38.

The spelling of 53181351272 in words is "fifty-three billion, one hundred eighty-one million, three hundred fifty-one thousand, two hundred seventy-two".