51106601091 has 64 divisors (see below), whose sum is σ = 85670323200. Its totient is φ = 26928518400.

The previous prime is 51106601057. The next prime is 51106601107. The reversal of 51106601091 is 19010660115.

It is not a de Polignac number, because 51106601091 - 2¹⁰ = 51106600067 is a prime.

It is a super-2 number, since 2×51106601091² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51106601011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19408711 + ... + 19411343.

It is an arithmetic number, because the mean of its divisors is an integer number (1338598800).

Almost surely, 2^51106601091 is an apocalyptic number.

51106601091 is a deficient number, since it is larger than the sum of its proper divisors (34563722109).

51106601091 is a wasteful number, since it uses less digits than its factorization.

51106601091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121 (or 4107 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The spelling of 51106601091 in words is "fifty-one billion, one hundred six million, six hundred one thousand, ninety-one".