51154735551446 has 4 divisors (see below), whose sum is σ = 76732103327172. Its totient is φ = 25577367775722.

The previous prime is 51154735551421. The next prime is 51154735551461. The reversal of 51154735551446 is 64415553745115.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 51154735551391 and 51154735551400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12788683887860 + ... + 12788683887863.

It is an arithmetic number, because the mean of its divisors is an integer number (19183025831793).

Almost surely, 2^{51154735551446} is an apocalyptic number.

51154735551446 is a deficient number, since it is larger than the sum of its proper divisors (25577367775726).

51154735551446 is a wasteful number, since it uses less digits than its factorization.

51154735551446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25577367775725.

The product of its digits is 25200000, while the sum is 56.

The spelling of 51154735551446 in words is "fifty-one trillion, one hundred fifty-four billion, seven hundred thirty-five million, five hundred fifty-one thousand, four hundred forty-six".