51487556842 has 8 divisors (see below), whose sum is σ = 77786956800. Its totient is φ = 25558571244.

The previous prime is 51487556839. The next prime is 51487556873. The reversal of 51487556842 is 24865578415.

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

It is a super-3 number, since 3×51487556842³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92603242 + ... + 92603797.

It is an arithmetic number, because the mean of its divisors is an integer number (9723369600).

Almost surely, 2^51487556842 is an apocalyptic number.

51487556842 is a deficient number, since it is larger than the sum of its proper divisors (26299399958).

51487556842 is a wasteful number, since it uses less digits than its factorization.

51487556842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185207180.

The product of its digits is 10752000, while the sum is 55.

The spelling of 51487556842 in words is "fifty-one billion, four hundred eighty-seven million, five hundred fifty-six thousand, eight hundred forty-two".