51776770551 has 32 divisors (see below), whose sum is σ = 78646837248. Its totient is φ = 29992316640.

The previous prime is 51776770541. The next prime is 51776770603. The reversal of 51776770551 is 15507767715.

51776770551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51776770551 - 2⁹ = 51776770039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51776770494 and 51776770503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51776770541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 981490 + ... + 1032896.

It is an arithmetic number, because the mean of its divisors is an integer number (2457713664).

Almost surely, 2^51776770551 is an apocalyptic number.

51776770551 is a deficient number, since it is larger than the sum of its proper divisors (26870066697).

51776770551 is a wasteful number, since it uses less digits than its factorization.

51776770551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52771.

The product of its (nonzero) digits is 1800750, while the sum is 51.

The spelling of 51776770551 in words is "fifty-one billion, seven hundred seventy-six million, seven hundred seventy thousand, five hundred fifty-one".