51111060605 has 32 divisors (see below), whose sum is σ = 67616208000. Its totient is φ = 36779296000.

The previous prime is 51111060601. The next prime is 51111060619. The reversal of 51111060605 is 50606011115.

51111060605 is digitally balanced in base 11, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51111060605 - 2² = 51111060601 is a prime.

It is a super-2 number, since 2×51111060605² (a number of 22 digits) contains 22 as substring.

51111060605 is strictly pandigital in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51111060601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15491246 + ... + 15494544.

It is an arithmetic number, because the mean of its divisors is an integer number (2113006500).

Almost surely, 2^51111060605 is an apocalyptic number.

51111060605 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51111060605 is a deficient number, since it is larger than the sum of its proper divisors (16505147395).

51111060605 is a wasteful number, since it uses less digits than its factorization.

51111060605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205.

The product of its (nonzero) digits is 900, while the sum is 26.

The spelling of 51111060605 in words is "fifty-one billion, one hundred eleven million, sixty thousand, six hundred five".