51256461106 has 8 divisors (see below), whose sum is σ = 77329112364. Its totient is φ = 25480090320.

The previous prime is 51256461103. The next prime is 51256461107. The reversal of 51256461106 is 60116465215.

It can be written as a sum of positive squares in 2 ways, for example, as 45258733081 + 5997728025 = 212741^2 + 77445^2 .

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

It is a super-2 number, since 2×51256461106² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51256461103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74069685 + ... + 74070376.

Almost surely, 2^51256461106 is an apocalyptic number.

51256461106 is a deficient number, since it is larger than the sum of its proper divisors (26072651258).

51256461106 is a wasteful number, since it uses less digits than its factorization.

51256461106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148140236.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 51256461106 in words is "fifty-one billion, two hundred fifty-six million, four hundred sixty-one thousand, one hundred six".