51106203640651 has 8 divisors (see below), whose sum is σ = 51154910237808. Its totient is φ = 51057498060000.

The previous prime is 51106203640619. The next prime is 51106203640673. The reversal of 51106203640651 is 15604630260115.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51106203640651 - 2⁵ = 51106203640619 is a prime.

It is a super-2 number, since 2×51106203640651² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51106203640451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134069676 + ... + 134450326.

It is an arithmetic number, because the mean of its divisors is an integer number (6394363779726).

Almost surely, 2^{51106203640651} is an apocalyptic number.

51106203640651 is a deficient number, since it is larger than the sum of its proper divisors (48706597157).

51106203640651 is a wasteful number, since it uses less digits than its factorization.

51106203640651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508253.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 51106203640651 in words is "fifty-one trillion, one hundred six billion, two hundred three million, six hundred forty thousand, six hundred fifty-one".