51240540652415 has 8 divisors (see below), whose sum is σ = 61856844285600. Its totient is φ = 40746968853472.

The previous prime is 51240540652307. The next prime is 51240540652421. The reversal of 51240540652415 is 51425604504215.

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

It is a cyclic number.

It is not a de Polignac number, because 51240540652415 - 2¹⁸ = 51240540390271 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30682957640 + ... + 30682959309.

It is an arithmetic number, because the mean of its divisors is an integer number (7732105535700).

Almost surely, 2^{51240540652415} is an apocalyptic number.

51240540652415 is a deficient number, since it is larger than the sum of its proper divisors (10616303633185).

51240540652415 is a wasteful number, since it uses less digits than its factorization.

51240540652415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61365917121.

The product of its (nonzero) digits is 960000, while the sum is 44.

The spelling of 51240540652415 in words is "fifty-one trillion, two hundred forty billion, five hundred forty million, six hundred fifty-two thousand, four hundred fifteen".