51878450460 has 72 divisors (see below), whose sum is σ = 148889281968. Its totient is φ = 13496806400.

The previous prime is 51878450443. The next prime is 51878450467. The reversal of 51878450460 is 6405487815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51878450467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156321 + ... + 358040.

It is an arithmetic number, because the mean of its divisors is an integer number (2067906694).

Almost surely, 2^51878450460 is an apocalyptic number.

It is an amenable number.

51878450460 is an abundant number, since it is smaller than the sum of its proper divisors (97010831508).

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

51878450460 is a wasteful number, since it uses less digits than its factorization.

51878450460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514455 (or 514412 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 51878450460 in words is "fifty-one billion, eight hundred seventy-eight million, four hundred fifty thousand, four hundred sixty".