5111271612 has 192 divisors, whose sum is σ = 14638256640. Its totient is φ = 1535542272.

The previous prime is 5111271589. The next prime is 5111271617. The reversal of 5111271612 is 2161721115.

5111271612 is a `hidden beast` number, since 511 + 127 + 16 + 12 = 666.

It is a super-2 number, since 2×5111271612² = 52250194983274157088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5111271617) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4550883 + ... + 4552005.

It is an arithmetic number, because the mean of its divisors is an integer number (76240920).

Almost surely, 2^5111271612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5111271612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7319128320).

5111271612 is an abundant number, since it is smaller than the sum of its proper divisors (9526985028).

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

5111271612 is a wasteful number, since it uses less digits than its factorization.

5111271612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1249 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 5111271612 is about 71493.1577984915. The cubic root of 5111271612 is about 1722.5677813013.

Adding to 5111271612 its reverse (2161721115), we get a palindrome (7272992727).

The spelling of 5111271612 in words is "five billion, one hundred eleven million, two hundred seventy-one thousand, six hundred twelve".