51780839534 has 8 divisors (see below), whose sum is σ = 78358615920. Its totient is φ = 25661300896.

The previous prime is 51780839533. The next prime is 51780839543. The reversal of 51780839534 is 43593808715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51780839531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114559154 + ... + 114559605.

It is an arithmetic number, because the mean of its divisors is an integer number (9794826990).

Almost surely, 2^51780839534 is an apocalyptic number.

51780839534 is a deficient number, since it is larger than the sum of its proper divisors (26577776386).

51780839534 is a wasteful number, since it uses less digits than its factorization.

51780839534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229118874.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 51780839534 in words is "fifty-one billion, seven hundred eighty million, eight hundred thirty-nine thousand, five hundred thirty-four".