51606006111506 has 48 divisors (see below), whose sum is σ = 98378427491712. Its totient is φ = 20076536844000.

The previous prime is 51606006111503. The next prime is 51606006111553. The reversal of 51606006111506 is 60511160060615.

It is a self number, because there is not a number n which added to its sum of digits gives 51606006111506.

It is not an unprimeable number, because it can be changed into a prime (51606006111503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34626170 + ... + 36085781.

It is an arithmetic number, because the mean of its divisors is an integer number (2049550572744).

Almost surely, 2^{51606006111506} is an apocalyptic number.

51606006111506 is a deficient number, since it is larger than the sum of its proper divisors (46772421380206).

51606006111506 is a wasteful number, since it uses less digits than its factorization.

51606006111506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70712655 (or 70712648 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 51606006111506 in words is "fifty-one trillion, six hundred six billion, six million, one hundred eleven thousand, five hundred six".