51543025278 has 32 divisors (see below), whose sum is σ = 105624933120. Its totient is φ = 16758056640.

The previous prime is 51543025273. The next prime is 51543025291. The reversal of 51543025278 is 87252034515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51543025273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1148701 + ... + 1192727.

It is an arithmetic number, because the mean of its divisors is an integer number (3300779160).

Almost surely, 2^51543025278 is an apocalyptic number.

51543025278 is an abundant number, since it is smaller than the sum of its proper divisors (54081907842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51543025278 is a wasteful number, since it uses less digits than its factorization.

51543025278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48832.

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 51543025278 in words is "fifty-one billion, five hundred forty-three million, twenty-five thousand, two hundred seventy-eight".