51231426141646 has 16 divisors (see below), whose sum is σ = 78635674301184. Its totient is φ = 25019555803704.

The previous prime is 51231426141641. The next prime is 51231426141671. The reversal of 51231426141646 is 64614162413215.

It is a junction number, because it is equal to n+sod(n) for n = 51231426141596 and 51231426141605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51231426141641) 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, 362196 + ... + 10128871.

It is an arithmetic number, because the mean of its divisors is an integer number (4914729643824).

Almost surely, 2^{51231426141646} is an apocalyptic number.

51231426141646 is a deficient number, since it is larger than the sum of its proper divisors (27404248159538).

51231426141646 is a wasteful number, since it uses less digits than its factorization.

51231426141646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10547895.

The product of its digits is 829440, while the sum is 46.

The spelling of 51231426141646 in words is "fifty-one trillion, two hundred thirty-one billion, four hundred twenty-six million, one hundred forty-one thousand, six hundred forty-six".