51355258040 has 16 divisors (see below), whose sum is σ = 115549330680. Its totient is φ = 20542103200.

The previous prime is 51355258013. The next prime is 51355258103. The reversal of 51355258040 is 4085255315.

It is a junction number, because it is equal to n+sod(n) for n = 51355257985 and 51355258003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 641940686 + ... + 641940765.

Almost surely, 2^51355258040 is an apocalyptic number.

It is an amenable number.

51355258040 is an abundant number, since it is smaller than the sum of its proper divisors (64194072640).

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

51355258040 is a wasteful number, since it uses less digits than its factorization.

51355258040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283881462 (or 1283881458 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 51355258040 in words is "fifty-one billion, three hundred fifty-five million, two hundred fifty-eight thousand, forty".