51360756223640 has 16 divisors (see below), whose sum is σ = 115561701503280. Its totient is φ = 20544302489440.

The previous prime is 51360756223613. The next prime is 51360756223657. The reversal of 51360756223640 is 4632265706315.

It is a congruent number.

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, 642009452756 + ... + 642009452835.

It is an arithmetic number, because the mean of its divisors is an integer number (7222606343955).

Almost surely, 2^{51360756223640} is an apocalyptic number.

It is an amenable number.

51360756223640 is an abundant number, since it is smaller than the sum of its proper divisors (64200945279640).

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

51360756223640 is a wasteful number, since it uses less digits than its factorization.

51360756223640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284018905602 (or 1284018905598 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 51360756223640 in words is "fifty-one trillion, three hundred sixty billion, seven hundred fifty-six million, two hundred twenty-three thousand, six hundred forty".