51245377477 has 8 divisors (see below), whose sum is σ = 58828775936. Its totient is φ = 43727636592.

The previous prime is 51245377471. The next prime is 51245377481. The reversal of 51245377477 is 77477354215.

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 51245377477 - 2¹⁹ = 51244853189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51245377471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16412718 + ... + 16415839.

It is an arithmetic number, because the mean of its divisors is an integer number (7353596992).

Almost surely, 2^51245377477 is an apocalyptic number.

It is an amenable number.

51245377477 is a deficient number, since it is larger than the sum of its proper divisors (7583398459).

51245377477 is a wasteful number, since it uses less digits than its factorization.

51245377477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32828787.

The product of its digits is 5762400, while the sum is 52.

The spelling of 51245377477 in words is "fifty-one billion, two hundred forty-five million, three hundred seventy-seven thousand, four hundred seventy-seven".