51780177967 has 8 divisors (see below), whose sum is σ = 59234752512. Its totient is φ = 44339955000.

The previous prime is 51780177949. The next prime is 51780177983. The reversal of 51780177967 is 76977108715.

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 51780177967 - 2²⁷ = 51645960239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51780177767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3580159 + ... + 3594592.

It is an arithmetic number, because the mean of its divisors is an integer number (7404344064).

Almost surely, 2^51780177967 is an apocalyptic number.

51780177967 is a deficient number, since it is larger than the sum of its proper divisors (7454574545).

51780177967 is a wasteful number, since it uses less digits than its factorization.

51780177967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175789.

The product of its (nonzero) digits is 5186160, while the sum is 58.

The spelling of 51780177967 in words is "fifty-one billion, seven hundred eighty million, one hundred seventy-seven thousand, nine hundred sixty-seven".