51860669478 has 32 divisors (see below), whose sum is σ = 104745363840. Its totient is φ = 17116388160.

The previous prime is 51860669437. The next prime is 51860669479. The reversal of 51860669478 is 87496606815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51860669479) 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, 1270978 + ... + 1311146.

It is an arithmetic number, because the mean of its divisors is an integer number (3273292620).

Almost surely, 2^51860669478 is an apocalyptic number.

51860669478 is an abundant number, since it is smaller than the sum of its proper divisors (52884694362).

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

51860669478 is a wasteful number, since it uses less digits than its factorization.

51860669478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42292.

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 51860669478 in words is "fifty-one billion, eight hundred sixty million, six hundred sixty-nine thousand, four hundred seventy-eight".