51159546460 has 48 divisors (see below), whose sum is σ = 117223112160. Its totient is φ = 18600099840.

The previous prime is 51159546421. The next prime is 51159546467. The reversal of 51159546460 is 6464595115.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51159546460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51159546467) 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, 1418572 + ... + 1454188.

It is an arithmetic number, because the mean of its divisors is an integer number (2442148170).

Almost surely, 2^51159546460 is an apocalyptic number.

It is an amenable number.

51159546460 is an abundant number, since it is smaller than the sum of its proper divisors (66063565700).

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

51159546460 is a wasteful number, since it uses less digits than its factorization.

51159546460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42166 (or 42164 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 51159546460 in words is "fifty-one billion, one hundred fifty-nine million, five hundred forty-six thousand, four hundred sixty".