51110135245491 has 8 divisors (see below), whose sum is σ = 77882110850304. Its totient is φ = 29205791568840.

The previous prime is 51110135245469. The next prime is 51110135245493. The reversal of 51110135245491 is 19454253101115.

51110135245491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51110135245491 - 2⁹ = 51110135244979 is a prime.

It is a super-2 number, since 2×51110135245491² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51110135245493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216907982015 + ... + 1216907982056.

It is an arithmetic number, because the mean of its divisors is an integer number (9735263856288).

Almost surely, 2^{51110135245491} is an apocalyptic number.

51110135245491 is a deficient number, since it is larger than the sum of its proper divisors (26771975604813).

51110135245491 is a wasteful number, since it uses less digits than its factorization.

51110135245491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433815964081.

The product of its (nonzero) digits is 108000, while the sum is 42.

The spelling of 51110135245491 in words is "fifty-one trillion, one hundred ten billion, one hundred thirty-five million, two hundred forty-five thousand, four hundred ninety-one".